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Monica [59]
3 years ago
12

Determine the direction of reaction if 1.00 M NOCl is combined with 0.500 M NO and 0.500 M Cl2 in a sealed flask. No reaction oc

curs. Reaction proceeds to the right toward the products. Reaction proceeds to the left toward the reactants. Reaction proceeds to the left toward the products.
Chemistry
1 answer:
ANTONII [103]3 years ago
4 0

Answer:

Reaction proceeds to the left toward the reactants.

Explanation:

Hello,

In this case, since the reaction is:

2NOCl (g) \rightleftharpoons 2NO(g) + Cl_2 (g); Keq= 4.4 x10^{-4}

For the given amounts, one computes the reaction quotient:

Q=\frac{[NO]^2[Cl_2]}{[NOCl]^2} =\frac{(0.500M)^2(0.500M)}{(1.00M)^2} =0.125

Thus, since Q>Keq, the reaction will form more NOCl in order to increase its concentration and therefore reestablish the equilibrium, for that reason the answer is reaction proceeds to the left toward the reactants.

Regards.

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If the concentration of Mg2+ in the solution were 0.039 M, what minimum [OH−] triggers precipitation of the Mg2+ ion? (Ksp=2.06×
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Answer:

2.30 × 10⁻⁶ M

Explanation:

Step 1: Given data

Concentration of Mg²⁺ ([Mg²⁺]): 0.039 M

Solubility product constant of Mg(OH)₂ (Ksp): 2.06 × 10⁻¹³

Step 2: Write the reaction for the solution of Mg(OH)₂

Mg(OH)₂(s) ⇄ Mg²⁺(aq) + 2 OH⁻(aq)

Step 3: Calculate the minimum [OH⁻] required to trigger the precipitation of Mg²⁺ as Mg(OH)₂

We will use the following expression.

Ksp = 2.06 × 10⁻¹³ = [Mg²⁺] × [OH⁻]²

[OH⁻] = 2.30 × 10⁻⁶ M

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<u>Answer:</u> The chemical equation is written below.

<u>Explanation:</u>

Every balanced chemical equation follows law of conservation of mass.

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The chemical equation for the reaction of elemental boron and oxygen gas follows:

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By Stoichiometry of the reaction:

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