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Thermochemical equations

Thermochemical equations

Assessment

Presentation

Chemistry

9th - 12th Grade

Practice Problem

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Created by

Ruba Raslan

Used 11+ times

FREE Resource

11 Slides • 8 Questions

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Multiple Choice

ΔH means:

1

temperature

2

calorimetry

3

enthalpy

4

synergy

3

Multiple Choice

A negative ΔH means the reaction is:

1

endothermic

2

exothermic

4

Multiple Choice

The change of enthalpy is usually expressed in___________.


1

kilojoule

2

joule

3

kilogram

4

newton

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Multiple Choice

what happens to ΔH when a reaction is reversed?

1

it stays the same

2

it changes its sign

3

it becomes zero

4

it doubles

11

Multiple Choice

If ΔH is positive, heat would be shown on the _____ side of the thermochemical equation.

1

reactants

2

products

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14

Multiple Choice

C+ O2 --> CO2 + 60kJ, what is the value for ΔH for the reaction?


1

+60 KJ

2

-60 KJ

3

there's no way to know

15

Multiple Choice

How much heat is absorbed if
4.0 mole A reacts?
A + 2B + 22.0 kJ → 3C  

1

22 KJ

2

44 KJ

3

66 KJ

4

88 KJ

16

Multiple Choice

Refer to the following question:

N2 + 3H2 --> 2NH3 + 39 kJ

How much energy would be produced if only 1 mol of hydrogen was reacted with excess nitrogen?

1

117 KJ

2

-117 KJ

3

13 KJ

4

-13 KJ

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