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Thermochemistry and Electrochemistry

Authored by Rebecca Brayfield

Chemistry

11th Grade - University

NGSS covered

Used 25+ times

Thermochemistry and Electrochemistry
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12 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

When the equation for the following reaction in basic solution is balanced, what is the sum of the coefficients?
MnO2 + HO2- -> MnO4-

18
9
14
11

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The following reaction has a ΔG value of 48.47 kJ/mol at 25C.
HB(aq) + H2O(l) <-> H3O+(aq) + B-(aq)
Calculate Ka for the acid HB.

0.981
-19.6
4.85 x 10-5
3.19 x 10-9

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Given the following in acidic media:
Fe2+ + Cr2O72- -> Fe3+ + Cr3+
answer the following question: The coefficient for water in the balanced reaction is:

5
7
3
1

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many electrons are transferred in the following reaction when it is balanced in acidic solution? SO32-(aq) + MnO4-(aq) -> SO42-(aq) + Mn2+(aq)

10
3
2
6

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which energy conversion shown below takes place in a galvanic cell?

electrical to chemical
mechanical to chemical
mechanical to electrical
chemical to electrical

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The following reactions occurs in basic solution: 
F2 + H2O -> O2 + F-
When the equation is balanced, the sum of the coefficients is:

11
13
12
10

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Consider the following numbered processes:
1. A -> 2B
2. B -> C + D
3. E -> 2D
ΔH for the process A -> 2C + E is

ΔH1 + ΔH2 + ΔH3
ΔH1 + ΔH2 
ΔH1 + ΔH2 - ΔH3
ΔH1 + 2ΔH2 - ΔH3

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