Name ___________________
CHEM 1364
Thursday Quiz #10
April 4, 2013
Spring 2013 (Buckley)
1. (3 points) Find the oxidation number of the underlined element in each of the following
species.
NH4+ ________
PI5 ____________
H3PO4 _____________
2. (2 points) A particular substance has a specific heat capacity of 2.0 J/mol-ºC. How much
heat would have to be added to a 10.0-g sample to increase its temperature from 25.0 ºC
to 35.0 ºC?
3. (3 points) A particular substance has a specific heat capacity of 2.0 J/mol-ºC. If 40 J of
heat were added to a 10.0-g sample of this substance, how much would the temperature
change?
4. (2 points) Which one of the following represents a formation reaction used to define the
standard enthalpy of formation? Circle the correct answer.
a. 2 P(s) + 3 Cl2 (g) 
2 PCl3 (g)
b. HCl(aq) + AgNO3 (aq)  HNO3 (aq) + AgCl (s)
N2(g) 
Ba3N2 (s)
d. P2O5 (g)  2 P(s) +
5/2 O2 (g)
c. 3 Ba(s) +
q = Cs × m × ΔT
Name ___________________
CHEM 1364
Thursday Quiz #10
April 4, 2013
Spring 2013 (Buckley)
1. (3 points) Find the oxidation number of the underlined element in each of the following
species.
NH4+ ________
PI3 ____________
H3PO3 _____________
2. (2 points) A particular substance has a specific heat capacity of 3.0 J/mol-ºC. How much
heat would have to be added to a 20.0-g sample to increase its temperature from 25.0 ºC
to 35.0 ºC?
3. (3 points) A particular substance has a specific heat capacity of 3.0 J/mol-ºC. If 90 J of
heat were added to a 10.0-g sample of this substance, how much would the temperature
change?
4. (2 points) Which one of the following represents a formation reaction used to define the
standard enthalpy of formation? Circle the correct answer.
a. 3 Ca(s) +
N2(g) 
Ca3N2 (s)
b. HBr(aq) + AgNO3 (aq)  HNO3 (aq) + AgBr (s)
c. 2 As(s) + 3 Br2 (g)
d. P2O5 (g)  2 P(s) +
q = Cs × m × ΔT

2 AsBr3 (g)
5/2 O2 (g)
Name ___________________
CHEM 1364
Thursday Quiz #10
April 4, 2013
Spring 2013 (Buckley)
1. (3 points) Find the oxidation number of the underlined element in each of the following
species.
NO3- ________
NI3 ____________
H2CO3 _____________
2. (2 points) A particular substance has a specific heat capacity of 4.0 J/mol-ºC. How much
heat would have to be added to a 10.0-g sample to increase its temperature from 25.0 ºC
to 35.0 ºC?
3. (3 points) A particular substance has a specific heat capacity of 4.0 J/mol-ºC. If 200 J of
heat were added to a 10.0-g sample of this substance, how much would the temperature
change?
4. (2 points) Which one of the following represents a formation reaction used to define the
standard enthalpy of formation? Circle the correct answer.
a. P2O5 (g)  2 P(s) +
b. 3 Sr(s) +
N2(g) 
5/2 O2 (g)
Sr3N2 (s)
c. HI(aq) + AgNO3 (aq)  HNO3 (aq) + AgI (s)
d. 2 P(s) + 5 Cl2 (g) 
q = Cs × m × ΔT
2 PCl5 (g)
Name ___________________
CHEM 1364
Thursday Quiz #10
April 4, 2013
Spring 2013 (Buckley)
1. (3 points) Find the oxidation number of the underlined element in each of the following
species.
NO2- ________
AsI3 ____________
H2SO4 _____________
2. (2 points) A particular substance has a specific heat capacity of 5.0 J/mol-ºC. How much
heat would have to be added to a 10.0-g sample to increase its temperature from 25.0 ºC
to 35.0 ºC?
3. (3 points) A particular substance has a specific heat capacity of 5.0 J/mol-ºC. If 100 J of
heat were added to a 10.0-g sample of this substance, how much would the temperature
change?
4. (2 points) Which one of the following represents a formation reaction used to define the
standard enthalpy of formation? Circle the correct answer.
a. P2O5 (g)  2 P(s) +
5/2 O2 (g)
b. HBr(aq) + AgNO3 (aq)  HNO3 (aq) + AgBr (s)
c. 2 P(s) + 3 Cl2 (g) 
d. 3 Mg(s) +
q = Cs × m × ΔT
N2(g) 
2 PCl3 (g)
Mg3N2 (s)