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
solong [7]
3 years ago
7

If ∆G◦ = 27.1 kJ at 25◦C for the reaction CH3COOH (aq) + H2O (l) → CH3COO− (aq) + H3O+ (aq), calculate Ka for this reaction at 2

98 K.1. 1.012. 5.63 × 1043. 1.15 × 10−114. 9.89 × 10−15. 1.78 × 10−5
Chemistry
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

Ka = 1.78 × 10⁻⁵

Explanation:

Let's consider the following thermochemical equation.

CH₃COOH(aq) + H₂O(l) → CH₃COO⁻(aq) + H₃O⁺(aq)   ∆G° = 27.1 kJ/mol

At 25°C (298 K), we can find the equilibrium constant (Ka) using the following expression.

∆G° = - R × T × lnKa

where,

R: ideal gas constant

T: absolute temperature

27.1 × 10³ J/mol = - (8.314 J/K.mol) × 298 K × lnKa

Ka = 1.78 × 10⁻⁵

You might be interested in
How many grams of a stock solution that is 92.5 percent H2SO4 by mass would be needed to make 250 grams of a 35.0 percent by mas
IrinaVladis [17]

94.6 g.  You must use 94.6 g of 92.5 % H_2SO_4 to make 250 g of 35.0 % H_2SO_4.

We can use a version of the <em>dilution formula</em>

<em>m</em>_1<em>C</em>_1 = <em>m</em>_2<em>C</em>_2

where

<em>m</em> represents the mass and

<em>C</em> represents the percent concentrations

We can rearrange the formula to get

<em>m</em>_2= <em>m</em>_1 × (<em>C</em>_1/<em>C</em>_2)

<em>m</em>_1 = 250 g; <em>C</em>_1 = 35.0 %

<em>m</em>_2 = ?; _____<em>C</em>_2 = 92.5 %

∴ <em>m</em>_2 = 250 g × (35.0 %/92.5 %) = 94.6 g

4 0
3 years ago
What actions affect blood pH
galben [10]
Integestion, vomiting, diarrhea<span>, lung function, endocrine function, kidney function</span>
4 0
3 years ago
A pump contains 0.5 L of air at 203kPa. You draw back on the piston of the pump until the pressure reads 25.4kPa. What is the vo
densk [106]
<h3><u> Answer</u>;</h3>

= 4.0 L

<h3><u>Explanation;</u></h3>

Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to pressure at a constant temperature.

Therefore; <em>Volume α 1/pressure</em>

<em>Mathematically; V α 1/P</em>

<em>V = kP, where k is a constant;</em>

<em>P1V1 = P2V2</em>

<em>V1 = 0.5 l, P1 =203 kPa, P2 = 25.4 kPa</em>

<em>V2 = (0.5 × 203 )/25.4 </em>

<em>     = 3.996 </em>

<em>    ≈ </em><em><u>4.0 L</u></em>

6 0
3 years ago
Which of the following is a nonrenewable resource?
Studentka2010 [4]

The answer is C) Nuclear.

The answer is C because, Renewable resources are something that can be re-used over and over again. Then Nonrenewable resources can't be made right away once it's been used. That being said, the answer is C.

A) Geothermal can be reused, which makes it renewable.

B) Solar can also be reused, which makes it renewable.

C) Nuclear can NOT be reused, which makes it nonrenewable.

D) Biomas is indeed renewable.

8 0
3 years ago
Rank the four gases (air, exhaled air, gas produced from the decomposition of H2O2, gas from decomposition of NaHCO3) in order o
Komok [63]
Astronomers use chemical signatures to determine<span> the age and .... </span>Gas<span> mixtures that contain more than </span>4<span>% hydrogen in </span>air<span> are potentially explosive. ... water vapor, </span>carbon dioxide<span>, and several other </span><span>gases</span>
6 0
3 years ago
Other questions:
  • A sample of gas occupies 17 mL at -122°C. What volume does the sample occupy at 70°C?
    11·1 answer
  • How many moles of Fe are needed to make 4 moles of FeCl2<br>​
    5·1 answer
  • What is answer and why
    12·1 answer
  • 1) What is the formula for calculating weight
    15·1 answer
  • How do hospitals depend on oil?
    14·2 answers
  • PLEASE HELP ME!
    6·1 answer
  • Have more points because i dont care
    14·2 answers
  • Which processes can change metamorphic rock to sedimentary rock?
    15·1 answer
  • What are the words for each blank spot?
    8·2 answers
  • What is a quantum of light energy called?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!