STRAIGHTERLINE CHEMISTRY EXAM BUNDLE
2026 COMPLETE QUESTIONS AND
SOLUTIONS
◉ An exothermic reaction causes the surroundings to:
A. warm up
B. become acidic
C. expand
D. decrease its temperature
E. release CO2. Answer: A
◉ Copper metal has a specific heat of 0.385 J/g•oC and has a melting
point of 1083oC.
calculate the amount of heat required to raise the temperature of
22.8 g of Cu from 20.0oC to 875oC.
A. 1.97 10 ─ 5 J
B. 1.0 10 ─ 2 J
C. 329 J
D. 7.51 kJ
E. 10.5 kJ. Answer: D
,◉ Calculate the amount of heat necessary to raise the temperature
of 12.0 kg of water from 15.4oC to 93.0oC.
A. 0.027 kJ B. 324 kJ C. 389 kJ D. 931 kJ
E. 3890 kJ. Answer: E
◉ How much heat is required to raise the temperature of 1500 g of
water from 25oC
to 52oC?
A. 1500 kJ B. 169 kJ C. 6.27 kJ D. 40.5 J E. 40.5 kJ. Answer: B
◉ How many degrees of temperature rise will occur when a 25.0 g
block of aluminum absorbs 10 kJ of heat? The specific heat of Al is
0.900 J/g•oC.
A. 0.44oC B. 22.5oC C. 225oC D. 360oC E. 444oC. Answer: E
◉ If 325 g of water at 4.2oC absorbs 12.28 kJ, then what is the final
temperature of the water?
A. 4.21oC B. 4.8oC C. 9.0oC D. 13.2oC E. 2938oC. Answer: D
◉ A glass containing 200 g of H2O at 20oC was placed into a
refrigerator. The water loses 11.7 kJ as it cools to a constant
temperature. What is its new temperature?
A. 0.013oC B. 4oC C. 6oC D. 14oC E. 34oC. Answer: C
,◉ A piece of copper with a mass of 218 g has a heat capacity of 83.9
J/oC. What is the specific heat of copper?
A. 0.385 J/g•oC B. 1.83 ´ 104 J/g•oC C. 2.60 J/g•oC D. 1.32 J/g•oC
E. 24.5 J/g•oC. Answer: A
◉ The specific heat of gold is 0.129 J/g•oC. What is the molar heat
capacity of gold (unit is J/mol•oC)?
A. 0.039 J/mol•oC
B. 0.129 J/mol•oC
C. 25.4 J/mol•oC
D. 39.0 kJ/mol•oC
E. 197 J/mol•oC. Answer: C
◉ When 0.7521 g of benzoic acid was burned in a calorimeter
containing 1000 g of water, a temperature rise of 3.60oC was
observed. What is the heat capacity of the bomb calorimeter,
excluding water? The heat of combustion of benzoic acid is ─26.42
kJ/g.
A. 15.87 kJ/oC
B. 4.18 kJ/oC
C. 5.52 kJ/oC
D. 1.34 kJ/oC
E. 752.1 kJ/oC. Answer: D
, ◉ Naphthalene combustion can be used to determine the heat
capacity of a bomb calorimeter. The heat of combustion of
naphthalene is 40.1 kJ/g. When 0.8210 g of naphthalene was
combusted in a calorimeter containing 1000 g of water a
temperature rise of 4.21oC was observed. What is the heat capacity
of the bomb calorimeter excluding the water?
A. 32.9 kJ/oC
B. 7.8 kJ/oC
C. 1.76 kJ/oC
D. 1.76 kJ/oC
E. 15.3 kJ/oC. Answer: C
◉ Which of the following processes is endothermic?
a. O2(g) + 2H2(g) 2H2O(g)
b. H2O(g) H2O(l)
c. 3O2(g) + 2CH3OH(g) 2CO2(g) + 2H2O(g)
d. H2O(s) H2O(l). Answer: D
◉ A 100 mL sample of 0.200 M aqueous hydrochloric acid is added
to 100 mL of 0.200 M aqueous ammonia in a calorimeter whose heat
capacity is 480 J K ─ 1. The following reaction occurs when the two
solutions are mixed.
HCl(aq) + NH3(aq) NH4Cl(aq)
2026 COMPLETE QUESTIONS AND
SOLUTIONS
◉ An exothermic reaction causes the surroundings to:
A. warm up
B. become acidic
C. expand
D. decrease its temperature
E. release CO2. Answer: A
◉ Copper metal has a specific heat of 0.385 J/g•oC and has a melting
point of 1083oC.
calculate the amount of heat required to raise the temperature of
22.8 g of Cu from 20.0oC to 875oC.
A. 1.97 10 ─ 5 J
B. 1.0 10 ─ 2 J
C. 329 J
D. 7.51 kJ
E. 10.5 kJ. Answer: D
,◉ Calculate the amount of heat necessary to raise the temperature
of 12.0 kg of water from 15.4oC to 93.0oC.
A. 0.027 kJ B. 324 kJ C. 389 kJ D. 931 kJ
E. 3890 kJ. Answer: E
◉ How much heat is required to raise the temperature of 1500 g of
water from 25oC
to 52oC?
A. 1500 kJ B. 169 kJ C. 6.27 kJ D. 40.5 J E. 40.5 kJ. Answer: B
◉ How many degrees of temperature rise will occur when a 25.0 g
block of aluminum absorbs 10 kJ of heat? The specific heat of Al is
0.900 J/g•oC.
A. 0.44oC B. 22.5oC C. 225oC D. 360oC E. 444oC. Answer: E
◉ If 325 g of water at 4.2oC absorbs 12.28 kJ, then what is the final
temperature of the water?
A. 4.21oC B. 4.8oC C. 9.0oC D. 13.2oC E. 2938oC. Answer: D
◉ A glass containing 200 g of H2O at 20oC was placed into a
refrigerator. The water loses 11.7 kJ as it cools to a constant
temperature. What is its new temperature?
A. 0.013oC B. 4oC C. 6oC D. 14oC E. 34oC. Answer: C
,◉ A piece of copper with a mass of 218 g has a heat capacity of 83.9
J/oC. What is the specific heat of copper?
A. 0.385 J/g•oC B. 1.83 ´ 104 J/g•oC C. 2.60 J/g•oC D. 1.32 J/g•oC
E. 24.5 J/g•oC. Answer: A
◉ The specific heat of gold is 0.129 J/g•oC. What is the molar heat
capacity of gold (unit is J/mol•oC)?
A. 0.039 J/mol•oC
B. 0.129 J/mol•oC
C. 25.4 J/mol•oC
D. 39.0 kJ/mol•oC
E. 197 J/mol•oC. Answer: C
◉ When 0.7521 g of benzoic acid was burned in a calorimeter
containing 1000 g of water, a temperature rise of 3.60oC was
observed. What is the heat capacity of the bomb calorimeter,
excluding water? The heat of combustion of benzoic acid is ─26.42
kJ/g.
A. 15.87 kJ/oC
B. 4.18 kJ/oC
C. 5.52 kJ/oC
D. 1.34 kJ/oC
E. 752.1 kJ/oC. Answer: D
, ◉ Naphthalene combustion can be used to determine the heat
capacity of a bomb calorimeter. The heat of combustion of
naphthalene is 40.1 kJ/g. When 0.8210 g of naphthalene was
combusted in a calorimeter containing 1000 g of water a
temperature rise of 4.21oC was observed. What is the heat capacity
of the bomb calorimeter excluding the water?
A. 32.9 kJ/oC
B. 7.8 kJ/oC
C. 1.76 kJ/oC
D. 1.76 kJ/oC
E. 15.3 kJ/oC. Answer: C
◉ Which of the following processes is endothermic?
a. O2(g) + 2H2(g) 2H2O(g)
b. H2O(g) H2O(l)
c. 3O2(g) + 2CH3OH(g) 2CO2(g) + 2H2O(g)
d. H2O(s) H2O(l). Answer: D
◉ A 100 mL sample of 0.200 M aqueous hydrochloric acid is added
to 100 mL of 0.200 M aqueous ammonia in a calorimeter whose heat
capacity is 480 J K ─ 1. The following reaction occurs when the two
solutions are mixed.
HCl(aq) + NH3(aq) NH4Cl(aq)
