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
Alenkasestr [34]
3 years ago
15

The equilibrium constant for the reaction Ni2+(aq) + 6 NH3(aq) ⇌ Ni(NH3)6 2+(aq) is Kf = 5.6 × 108 at 25°C. (a) What is ΔG o at

this temperature? (b) If standard-state concentrations of reactants and products are mixed, in which direction does the reaction proceed? (c) Determine ΔG when [Ni(NH3)62+] = 0.010 M, [Ni2+] = 0.0010 M, and [NH3] = 0.0050 M. In which direction will the reaction proceed to achieve equilibrium? (a) × 10 J/mol (Enter your answer in scientific notation.) (b) To the right. To the left. (c) × 10 J/mol (Enter your answer in scientific notation.) To the right. To the left.
Chemistry
1 answer:
shusha [124]3 years ago
5 0

Answer:

(a) -49.9 kJ/mol;

(b) To the right;

(c) 34.6 kJ/mol

Explanation:

(a) For this reaction, since it's at equilibrium and standard states, we know that we can apply the equation:

\Delta G^o = -RT ln (K_f)

Substituting the given variables:

\Delta G^o = -8.314 \frac{J}{K mol}\cdot 298.15 K\cdot ln (5.6\cdot 10^8) = -49932 J/mol = -49.9 kJ/mol

(b) Notice that this reaction is spontaneous, since \Delta G^o < 0. This means reaction spontaneously proceeds to the right side. Besides, K > 1, this means products dominate over reactants, so reaction proceeds to the right.

(c) Given the expression of the formation constant, we can use the same expression to calculate the reaction quotient at non-standard conditions:

Q_f = \frac{[Ni(NH_3)_6]^{2+}}{[Ni^{2+}][NH_3]^6} = \frac{0.010}{0.0010\cdot 0.0050^6} = 6.4\cdot 10^{14}

Now, notice that Q_f > K_f. In this case, we have an excess of the products, this means reaction will shift to the let left to restore the equilibrium.

Calculate:

\Delta G = \Delta G^o + RT ln Q_f = -49932 J/mol + 8.314 \frac{J}{K mol}\cdot 298.15 K\cdot ln(6.4\cdot 10^{14}) = 34577 J = 34.6 kJ/mol

You might be interested in
If a combination reaction takes place between rubidium and bromine, the chemical formula for the product is
lesya [120]
The chemical formula for the product is RbBr.
7 0
3 years ago
How many liters of solution can be produced from 2.5 moles of solute if a 2.0 M
Firlakuza [10]

Answer:

The answer is 1.25 L

Explanation:

5 0
3 years ago
One brand of vinegar has a pH of 4.5. Another brand has a pH of 5.0. The equation for the pH of a substance is pH = –log[H+], wh
grigory [225]
[H+] in first brand:
4.5 = -log([H+])
[H+] = 10^(-4.5)

[H+] in second brand:
5 = -log[H+]
[H+] = 10^(-5)

Difference = 10^(-4.5) - 10^(-5)
= 2.2 x 10⁻⁵

The answer is A.
7 0
3 years ago
Read 2 more answers
Answer that pls will give brainlist
ELEN [110]

Answer:

1. went on the first manned launch during the Apollo mission

2. responsible for all spacecraft systems

3. 4500 hour

4. published All-American Boys

5. Joined back in space organization as a consultant to inspire next generation for mars

4 0
3 years ago
Describe what happens to an ionic compound when it has been fully dissolved in water
Marat540 [252]
When you immerse an ionic compound<span> in </span>water<span>, the ions are attracted to the </span>water <span>molecules, each of which carries a polar charge. If the attraction between the ions and the </span>water <span>molecules </span>is<span> great enough to break the bonds holding the ions together, the compound </span>dissolves<span>. </span>
6 0
3 years ago
Other questions:
  • What are clouds composed of?
    9·2 answers
  • What would it feel like to walk on the surface of the moon??
    12·2 answers
  • Hi, May I have Chem help please? Please Keep the answer as simple as possible because it is a for a bcr.
    7·1 answer
  • Which statement best describes the intermolecular forces between N2
    7·1 answer
  • Which phrases describe all the outer planets' motion? Check all that apply.
    14·1 answer
  • Why can’t straw be made into gold
    11·2 answers
  • PLS help its not that hard but I don't understand it. Its science not chemistry but they don't have science.
    13·2 answers
  • For the following reaction, 4.77 grams of carbon (graphite) are allowed to react with 16.4 grams of oxygen gas.
    14·1 answer
  • 5. Which number is a possible pH for a solution that contains more hydronium
    7·1 answer
  • Need help on this question
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!