Chemistry Equilibrium

Chemistry Equilibrium

12th Grade

15 Qs

quiz-placeholder

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Chemistry Equilibrium

Chemistry Equilibrium

Assessment

Quiz

Science

12th Grade

Practice Problem

Medium

NGSS
HS-PS1-6, HS-PS1-7, HS-PS1-5

Standards-aligned

Created by

Lisa Thompson

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

This symbol indicates that a reaction is _____

reversible

irreversible

Tags

NGSS.HS-PS1-6

2.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

The equilibrium constant expression for the reaction BrF5(g) —> Br2(g) + F2(g) is


Kc = [Br2] [F2] / [BrF5]

Kc = [BrF5]2 / [Br2][F2]5

Kc = [Br2] [F2]5 / [BrF5]2

Kc = 2[BrF5]2 / ([Br2] × 5[F2]5)

Kc = [Br2] [F2]2 / [BrF5]5

3.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Which is the correct equilibrium constant expression for the following reaction? Fe2O3(s) + 3H2(g) —> 2Fe(s) + 3H2O(g)

K = [H2O]3 / [H2]3

K = [Fe2O3] [H2]3 / [Fe]2[H2O]3

K = [Fe]2[H2O]3 / [Fe2O3] [H2]3

K= [Fe] [H2O] / [Fe2O3] [H2]

K = [H2] / [H2O]

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

The equilibrium between carbon dioxide gas and carbonic acid is very important in biology and environmental science. CO2(g) + H2O(l) —> H2CO3(aq)

Which one of the following is the correct equilibrium constant expression (Kc) for this reaction?

Kc= 1/ [H2CO3]

Kc= [CO2]/ [H2CO3]

Kc= [H2CO3] / [CO2]

Kc= [CO2] [H2O] / [H2CO3]

Kc= [H2CO3] / [CO2] [H2O]

5.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Which of the following changes will shift the position of the equilibrium to the left?

Increasing the temperature of an exothermic reaction.

Increasing the pressure of a reaction that has the same number of moles of gas on both sides

Adding a catalyst to a reaction

Adding more concentrations to the reactants

Tags

NGSS.HS-PS1-6

6.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

At equilibrium, the rate of the forward reaction is ________ the rate of the backward reaction

Greater than

Equal to

Less than

Tags

NGSS.HS-PS1-6

7.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Which of the following will never affect the position of an equilibrium?

The temperature

The pressure

A catalyst

The concentration of reactants

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