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Keq Review (LTA C1)

Keq Review (LTA C1)

Assessment

Flashcard

Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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14 questions

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1.

FLASHCARD QUESTION

Front

What is the equilibrium constant (K_eq)?

Back

The equilibrium constant (K_eq) is a numerical value that expresses the ratio of the concentrations of products to the concentrations of reactants at equilibrium for a reversible chemical reaction.

2.

FLASHCARD QUESTION

Front

What does a large K_eq value indicate about a reaction?

Back

A large K_eq value (e.g., K_eq = 1000) indicates that at equilibrium, the reaction favors the formation of products, meaning there are mostly products present.

3.

FLASHCARD QUESTION

Front

What is the equilibrium-constant expression for the reaction: CO2(g) + H2(g) ↔ CO(g) + H2O(l)?

Back

K_c = [CO] / [CO2][H2]

4.

FLASHCARD QUESTION

Front

How do you calculate the equilibrium constant (K_eq) from concentrations?

Back

K_eq is calculated using the formula: K_eq = [products]^[coefficients] / [reactants]^[coefficients], where concentrations are raised to the power of their coefficients in the balanced equation.

5.

FLASHCARD QUESTION

Front

What does a small K_eq value indicate about a reaction?

Back

A small K_eq value (e.g., K_eq < 1) indicates that at equilibrium, the reaction favors the reactants, meaning there are mostly reactants present.

6.

FLASHCARD QUESTION

Front

In the reaction SO2(g) + NO2(g) ↔ SO3(g) + NO(g), what are the equilibrium concentrations given: [SO3] = 0.40 M, [NO] = 0.30 M, [NO2] = 0.15 M, [SO2] = 0.20 M?

Back

K_eq = (0.40)(0.30) / (0.20)(0.15) = 4.0

7.

FLASHCARD QUESTION

Front

What is the significance of the equilibrium constant in chemical reactions?

Back

The equilibrium constant provides insight into the extent of a reaction and helps predict the concentrations of reactants and products at equilibrium.

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