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
serg [7]
3 years ago
12

The K w for water at 0 ∘ C is 0.12 × 10 − 14 M 2 . Calculate the pH of a neutral aqueous solution at 0 ∘ C . p H = Is a pH = 7.2

5 solution acidic, basic, or neutral at 0 ∘ C ?
Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
8 0

Answer:

pH → 7.46

Explanation:

We begin with the autoionization of water. This equilibrium reaction is:

2H₂O  ⇄   H₃O⁺  +  OH⁻            Kw = 1×10⁻¹⁴         at 25°C

Kw = [H₃O⁺] . [OH⁻]

We do not consider [H₂O] in the expression for the constant.

[H₃O⁺] = [OH⁻] = √1×10⁻¹⁴   →  1×10⁻⁷ M

Kw depends on the temperature

0.12×10⁻¹⁴ = [H₃O⁺] . [OH⁻]  → [H₃O⁺] = [OH⁻]         at 0°C

√0.12×10⁻¹⁴ = [H₃O⁺] → 3.46×10⁻⁸ M

- log [H₃O⁺] = pH

pH = - log 3.46×10⁻⁸ → 7.46

You might be interested in
What is the National Suicide rate for Teens?
Butoxors [25]
I think it is 11% I read it on a article on msn.
4 0
3 years ago
Which of the following statements about balanced chemical equations is true?
miv72 [106K]

Answer:

The correct answer is They provide the molar ratio of reactant and products in a chemical reaction.

Explanation:

Balanced chemical equation helps us to calculate the number of moles of both reactant and product.For example

    2H2+O2=2H2O

From the above balanced equation it can be stated that 2 molecules of hydrogen(H2) reacts with 1 molecule of oxygen(O2) to form 2  molecules of water.

       

3 0
3 years ago
Read 2 more answers
Given the unbalanced equation: al + cuso4 --> al2(so4)3 + cu. when properly balanced, the sum of the balancing coefficients i
elena-14-01-66 [18.8K]
2Al + 3CuSO₄  =  Al₂(SO₄)₃ + 3Cu

∑=2+3+1+3=9

c. 9
3 0
3 years ago
What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche?
vitfil [10]
<span>During an avalanche, potential energy of the snow on the mountain is converted to kinetic energy as the snow cascades down. The conversion of potential energy to kinetic energy is due to the compacted atoms in the snow which will accumulate other snow resulting to a bigger snow that causes avalanche.</span>
4 0
3 years ago
A colorless, toxic, radioactive gas is called what
DanielleElmas [232]
A colorless, toxic, radioactive gas is called, bioaccumulation.
3 0
3 years ago
Other questions:
  • We say that salts will dissociate but acids will react with water. We say that acids will
    5·1 answer
  • Which among the following is the most electropositive metal?​
    8·1 answer
  • If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law
    10·2 answers
  • When oxygen reacts with hydrogen, it has the capacity to release 29 kilojoules of energy. Inside a fuel cell, oxygen reacts with
    13·1 answer
  • What is the chemical name of the compound represented by the formula Ni2O3?
    7·2 answers
  • Which one of the following reactions would produce t-butyl methyl ether in high yield?
    9·1 answer
  • Which particle has two positive charge and an electron arrangement of 2, 8?
    7·1 answer
  • A thief who has stolen large quantities of uranium-235 may have increased
    12·1 answer
  • What's the formula for bisonium dingodie chemical
    6·1 answer
  • What are the oxidation numbers for groups 1-18 (skip groups 3-12)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!