1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ad-work [718]
2 years ago
15

Calculate the [ OH − ] and the pH of a solution with an [ H + ] = 0.090 M at 25 °C . [ OH − ] = M pH = Calculate the [ H + ] and

the pH of a solution with an [ OH − ] = 0.00098 M at 25 °C . [ H + ] = M pH = Calculate the [ H + ] and the [ OH − ] of a solution with a pH = 10.15 at 25 °C . [ H + ] = M [ OH − ] =
Chemistry
1 answer:
Valentin [98]2 years ago
3 0

Answer:  a) [OH^-]=1.09\times 10^{-13} and pH = 1.04

b) [H^+]=1.02\times 10^{-11}  and pH=10.99

c) [H^+]=7.08\times 10^{-11} and [OH^-]=1.41\times 10^{-4}

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

pOH=-\log [OH^-]

pH+pOH=14

a) [H^+]=0.090M

pH=-\log [0.090]=1.04

pOH=14-1.04=12.96

12.96=-log[OH^-]

[OH^-]=1.09\times 10^{-13}

b) [OH^-]=0.00098M

pOH=-\log [0.00098]=3.01

pH=14-3.01=10.99

10.99=-log[H^+]

[H^+]=1.02\times 10^{-11}

c) pH=10.15

10.15=-\log [H^+]

[H^+]=7.08\times 10^{-11}

pOH=14-10.15=3.85

3.85=-log[OH^-]

[OH^-]=1.41\times 10^{-4}

You might be interested in
What is a polyprotic buffer?
coldgirl [10]
Buffers - mixtures of conjugate acid and conjugate base at ±1 pH unit from pH = pKa. Resistant to changes in pH in response to small additions of H+ or OH-. ... Polyprotic acids - dissociation of each H+ can be treated separately if the pKa values are different
3 0
3 years ago
Carl crumbled a piece of paper before throwing it in the trash can. Which is true about the paper after it has been crumbled
tiny-mole [99]
Answer is <span>C: It's appearance changed.</span>
4 0
2 years ago
Add a constant temperature when the volume of the gas is decreased what happens to its pressure
Margaret [11]

Answer:

<h2>Pressure will increase</h2>

Explanation:

At a constant temperature, the pressure of gas will increase proportional to the decrease in volume of the gas.

P1V1= P2V2

Decrease in volume result in increase in pressure as the equation has to hold true.

8 0
2 years ago
Need some facts on the big bang theory! -Science
bearhunter [10]

Answer:

Here you go!

Explanation:

Our Universe is just a small part. There are many other Universes’ that exist. We live in a Multiverse. ...

Astronomer Edwin Hubble, in 1920’s, discovered that the Universe is not static. It is expanding and contracting continuously.

There is a dark energy that is making the Universe expand and accelerate at a larger rate than it did many years ago. ...

The Universe is infinite. It has no end. Thus scientists believe that the Universe is not a closed sphere but as flat as a sheet of paper and has no ...

According to the scientists the planets, stars and galaxies include only 4% of what a Universe consists of. 96% of the things in the Universe cannot be seen.

6 0
2 years ago
Read 2 more answers
What is the distinction between magma and lava​
lesya692 [45]

Answer:

Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth's surface.

7 0
2 years ago
Other questions:
  • What’s molar mass? For chemistry
    6·1 answer
  • Please I need help with questions 10-15 and it’s very hard and I’m struggling with it and if you need to see the picture big the
    13·1 answer
  • After decaying for 48 hours, l/16 of the original mass of a radioisotope sample remains unchanged. What is the half-life of this
    9·1 answer
  • In two or more complete sentences describe all of the van der Waals forces that exist between molecules of sulfur
    14·2 answers
  • The inner four planets of our solar system are called the __________ planets and the next four are called the __________ planets
    6·1 answer
  • Which of these pumpkins has the most<br> thermal energy? Explain your answer.
    10·1 answer
  • Which molecule is pentanoic acid?<br> ОА.<br> Н<br> 1<br> НЕС-ОН<br> ОВ.<br> Н<br> ОН<br> ор.н.н
    5·1 answer
  • Does anyone know the answer for this
    10·1 answer
  • 7. A gas-filled weather balloon with a volume of 65.0 L is released at sea-level conditions of
    14·1 answer
  • In a compressional wave, when the particles are far apart, what is the part known as
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!