if the hydrogen ion concentration [H+] in a solution is 1.87 x 10^-11M what is the [OH-]

Answers

Answer 1

By using pH formula, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.

What is pH?

The pH scale is a measurement of hydrogen ion concentration that is used to determine the acidity as well as alkalinity of a solution.

Calculation of [OH-] by using formula of pH.

Given data:

[H+] = 1.87 x [tex]10^{-11} M[/tex]

[OH-] = ?

Calculation of [OH-] is shown below:

It can be calculated by using the formula:

pH = -log [H+]

Put the value of concentration of hydrogen ion [H+]  in above formula.

pH = -log (1.87 x [tex]10^{-11} M[/tex])

pH = -log (1.87) -log ( [tex]10^{-11} M[/tex])

pH = -0.27 +11

pH = 10.73

Now, use the formula, pH +pOH = 14

pOH = 14 - pH

pOH = 14 - 10.73

pOH = 3.27

Now, use formula pOH = -log [OH-]

[OH-] = [tex]10^{-pOH}[/tex]

[OH-] = [tex]10^{-3.27}[/tex]

[OH-] = 5.3 ×[tex]10^{-4}[/tex] M

Therefore, the concentration of hydroxyl ion [OH-] will be 5.3 ×[tex]10^{-4}[/tex] M.

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Related Questions

What does temperature indirectly measure? 1)Sound 2)Thermometers 3)Chemical Reactions 4)Heat​

Answers

Answer:

Heat

Explanation:

Temperature is the average thermal energy (or heat) in a substance. Sound isn't really related, thermometers measure temperature, and chemical reactions can produce heat, but none of those are measured by temperature.

Convert 3,526 meters (m) into kilometers (km). (Don't forget units)
EN
Voranean

Answers

Answer:

3,526 meters (m) into kilometers (km) = 0.003526 kilometers

Explanation:

the mass number for an atom is numerically equal to which quantity

Answers

Answer:

The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in an atom is its mass number minus its atomic number.

Explanation:

protons

The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.

How many protons and neutrons are in the third isotope?

Answers

Answer:

6 protons and 7 neutron

Explanation:

Carbon has a third isotopes named carbon-13

All carbon isotopes have 6 protons .

This is called atomic number. To make it up to 13 in carbon -13 you will need 7 neutrons and 6protons .

What is the formula for the ionic compound formed when aluminum bonds with arsenic?

Answers

Answer:

AlAsO4

Explanation:

Aluminium arsenate is an inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced by the reaction between sodium arsenate and a soluble aluminium salt.

What causes the liquid in a thermometer to rise?

Answers

Answer:

The level of colored liquid rises when the thermometer is placed in hot water. Heat causes the molecules of the liquid to get farther apart. The molecules of the liquid break down into atoms and take up more space.

Explanation:

You have been handed a 1892.6g sample of Rion and determine that it has
a volume of 200.0 mL. What is the density of Rion?

Answers

Answer:

9.46 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 1892.6 g

volume = 200 mL

We have

[tex]density = \frac{1892.6}{200} \\ = 9.463[/tex]

We have the final answer as

9.46 g/mL

Hope this helps you

1) pbo+co-->pb+co2 which type of reaction is this?
a) redox reaction
b) oxidation reaction
c) reduction reaction
d) none of the above​

Answers

Answer: a) Redox Reaction

Explanation:

PbO  +  CO  →  Pb + CO₂

Oxidation States of the Elements

      Reactants     Products

Pb       +2                   0

O       -2, -2               -4

C         +2                 +4

Since the oxidation state/number of Pb decreased, it is being Reduced.

Since the oxidation state/number of C increased, it is being Oxidized.

                  ∴ this is a Redox Reaction

I NEED OXIDATION AND REDUCED FOR BOTH ASAP PLS HELP (make sure its correct)

Answers

Have you tried the app chem balancer I found it a great help when working on chemistry

How many metals, nonmetals and metalloids are there in the periodic table?

Answers

Answer:

113 because there are 113 elements

Explanation:

What is the final temp of
solver if the temperature of
25.89 sample of silver
starts out at 30.0°C and
40.5) of heat is added?
The specific heat of silver
130235 ](°C).

Answers

Hdhdhebsjqkkhey sajen

A landslide carries many tons of rock from a hillside into a valley. All of the plants in the valley are buried. New plants that begin to grow in the valley after the landslide will MOST LIKELY lack —

Answers

Answer: c

Explanation: i got a 100 on the test

Obtain and Communicate Information 1. SEP Obtain Scientific Information Conduct research to learn about the history of atomic models and the scientists who developed the models. Identify any experimental evidence and reasoning that supported each model. I​

Answers

Answer:

Sorry I don't know.

Explanation:

I'm in 8th grade.

How is a beta particle formed?

Answers

Answer:

forms when a neutron changes into a proton and a high-energy electron .

hope this helps <3

What is the density of an object having a volume of 8 ml and a mass of 22 grams?

Answers

Answer:

0.32gcm3 .           I miss the old Kanye, straight from the 'Go Kanye

Chop up the soul Kanye, set on his goals Kanye

I hate the new Kanye, the bad mood Kanye

The always rude Kanye, spaz in the news Kanye

I miss the sweet Kanye, chop up the beats Kanye

I gotta to say at that time I'd like to meet Kanye

See I invented Kanye, it wasn't any Kanyes

And now I look and look around and there's so many Kanyes

I used to love Kanye, I used to love Kanye

I even had the pink polo, I thought I was Kanye

What if Kanye made a song about Kanye

Called "I Miss The Old Kanye, " man that would be so Kanye

That's all it was Kanye, we still love Kanye

And I love you like Kanye loves Kanye

Explanation:

Answer:

2.75

Explanation:

D= [tex]\frac{mass}{volume}[/tex]

[tex]\frac{22}{8}[/tex]= 2.75

Hope this helps!

Which change is likely to happen to an atom of the element strontium (Sr) during bonding?

(1 point)

It will gain electrons, forming a positive ion.
It will gain electrons, forming a positive ion.

It will give up electrons, forming a negative ion.


It will give up electrons, forming a positive ion.


It will gain electrons, forming a negative ion.

Answers

Answer: It will give up electrons, forming a positive ion.

During bonding, strontium atom will give up electrons, forming a positive ion.

STRONTIUM:

Strontium (Sr) is an element in group 2 of the periodic table. Just like every other element in group 2, strontium posseses two valence electrons in its outermost shell.

Strontium will undergo bonding with other atoms by losing its two (2) valence electrons to form a cation i.e. a positively charged ion.

Therefore, strontium atom will give up electrons, forming a positive ion when it undergoes bonding.

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when the n quantum number equals 1, we are in what orbital?

Answers

Answer:

p orbital

Explanation:

What does potential and kinetic energy have in common

Answers

The only things that come in mind are they are both forms of energy that have something to do with movement. Kind of a smart alike response but I hope it helps.

What does the atoms of metals have

Answers

Answer:

I dont know

Explanation:

because I dont know

Good luck because that’s easy bro

What type of front is created when a warm air mass moves in to replace a
retreating cold air mass?

Answers

The type of fron created is a "warm" front.

What is the mass in grams of 100 atoms of carbon? (put answer in one significant figures)
(To enter an answer using Scientific Notation use "e.” For example, 6.022 x 1023 would be entered
as 6.022e+23 or 6.626 x 10-34 would be entered as 6.626e-34)
[word1]

Answers

Answer:    2e-21  (or 2 × 10⁻²¹)

Explanation:

Since we are starting from the number of atoms of Sulfur, we need to know two sets of formulas:

mass  = moles × molar mass

moles = atoms ÷ Avogadro's Number

       

         ⇒    mass = (atoms ÷ Avogadro's Number) ×  molar mass

 mass = [(100 atoms) ÷ (6.022 × 10²³ atoms/mole)] × (12.011 g/mol)    

           = 1.99 × 10⁻²¹ g

           ≈ 2e-21         [to 1 sig fig]

the mass of a sample of S containing 2.01×10²⁴ atoms is 1.99 × 10⁻²¹ g.

Write the electron configuration of the element fitting each of the following descriptions. a. The group 2A element in the fourth period b. The noble gas in the fifth period c. The group 2B element in the fourth period d. The group 6A element in the second period

Answers

Answer:

a. Calcium: [Ar]4s^2

or 1s^2 2s^2 2p^6 3s^2 3p^6 (= Argon) 4s^2

b. Xenon

c. Zinc

d. Carbon

Explanation:

Group 2A = Alkaline Earth; period 4 shows that the element will be calcium.

To write the Electron Configuration we remember that Columns 1&2 and Helium represent the s-orbital which holds a maximum of 2 electrons. Columns 13 through 18 fill the p-orbital.

Which one of these is an example of a virus that can affect a range of hosts? A) the varicella virus B) the rabies virus C) the rhinovirus D) the rubella virus

Answers

Answer:

B) the rabies viru

Explanation:

If the atomic number is bigger then is the nuclear charge also bigger

Answers

Answer:

No

Explanation:

When atomic number is increasing its atomic mass increases

Atomic number doesn't affect nuclear charge

A nickel compound has the formula Ni(NO3)2•xH,0 and a molar mass
of 290.7 g mol-1. Calculate the value of x.
Someone tell me the method for this

Answers

Answer:  x = 6

Explanation:

Molar mass of a compound is the sum of the molar mass of all the atoms of the compound.

⇒ Molar mass of the Nickel Compound (Hydrated Nickel (II) Nitrate)

             = Molar mass (Ni+ 2N + 6O)+ x (2H+ O)

             = [58.693 +  2(14.007) + 6(15.999)] + x [2(1.008) + 15.999] g/mol

             = (182.701 + 18.015x) g/mol

Since the molar mass is known to be  290.7 g/mol

then  182.701 + 18.015x = 290.7

⇒                       18.015x =  290.7 - 182.701

                                    x =  (290.7 - 182.701) ÷ 18.015

∴                                   x = 6    [conventionally expressed as a whole number]

            that makes the compound Nickel Nitrate Hexahydrate

The value of x in the hydrated compound of nickel nitrate with molecular mass 290.7 g/mol is 6.

What is the molecular mass?

Molecular mass can be defined as the sum of the mass of each element in the compound.

The molecular mass of the given compound is 290.7 g/mol. The value of x in the compound can be given as;

[tex]\rm 290.7\;g/mol=2(Ni)+2(N)+2(3O)+x(2H+O)[/tex]

Substituting the mass of N, Ni, O and H for the calculation of x as:

[tex]\rm 290.7\;g/mol=(58.693)+2(14.007)+2(3(15.999))+x(2(1.008)+15.999)\\290.7=182.701+18.015x\\x=6[/tex]

The value of x in the hydrated compound of nickel nitrate is 6.

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which of the beryllium halides are considered ionic compounds?

Answers

Answer:

Beryllium Fluoride (BeF2) is an ionic compound


How many moles are there in 8.94*10^24 atoms P?

Answers

Answer:

14.85 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{8.94 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.850498[/tex]

We have the final answer as

14.85 moles

Hope this helps you

the answer is 14.85 moles in that equation

đun 8,8 g một este có công thức phân tử c 4 h 8 O2 trong dung dịch NaOH vừa đủ đến khi phản ứng hoàn toàn thu được 3,2 g ancol X và một lượng muối y công thức cấu tạo của este đó là

Answers

Answer:

english please I don't understand

PLEASE HELP MEEEEEEEEEEEeeeeeee before mom get home lol anyways..... hi :)

Answers

Answer:

GUYS THIS RANDOM GIRL HANNAHJAXON DELETED ALL OF MY ANSWERS AND QUESTIONS ON MY ACCOUNT!!!

Explanation:

Explain why titritations using permanganate are performed in Acid solutions

Answers

Titrations with Permanganate must be carried out in strong acid solution. Sulfuric Acid is generally used for this purpose because Nitric Acid and Hydrochloric Acid can participate in competing oxidation-reduction reactions, reducing the accuracy of the titration.

The titration using permanganate in acidic solution because it can be act as behave indicator.

What is titration?

Titration is a typical quantitative chemical analysis procedure used in laboratories to quantify the concentration of a specified analyte. The titrant or titrator is a substance that is manufactured as a standard solution with a given concentration as well as volume.

Permanganate titrations must be performed in a strong acid solution. Because [tex]HNO_{3}[/tex] and HCl might involve in competing for a redox reaction, lowering the accuracy of the titration, sulfuric acid is commonly utilized. Titration permits food manufacturers to calculate the amount of a reactant present in a sample.

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