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“ CHEMISTRY FOR ENGINEERS - EXAM 2
PRACTICE “LATEST 2025 UPDATED EXAM
2025 – 2026 SOLVED QUESTIONS &
ANSWERS VERIFIED 100% GRADED A+
(LATEST VERSION)
Chemistry for Engineers - Exam 2 Practice
.
If 200 mL of 3.0 M solution were diluted to 300 mL, what would the
concentration be?
a. 0.010 M
b. 0.10 M
c. 2.0 M
d. 10 M
e. 100 M
c. 2.0 M
If the molar concentration of sodium sulfate (Na2SO4) is 0.20 M, what is the
concentration of sodium ion?
a. 0.80 M
b. 0.60 M
c. 0.40 M
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d. 0.20 M
e. 0.10 M
c. 0.40 M
Which one of the following reaction equations is the net ionic equation for
the reaction of nitric acid with sodium hydroxide? All species are in aqueous
solution.
a. HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l)
b. H+ (aq) + NO3- (aq) + Na+ (aq) + OH- (aq) →
Na+ (aq) + NO3- (aq) + H2O (l)
c. H+ (aq) + NO3- (aq) + Na+ (aq) + OH- (aq) →
Na NO3- (aq) + H2O (l)
d. H+ (aq) + OH- (aq) → H2O (l)
d. H+ (aq) + OH- (aq) → H2O (l)
Identify the correct net ionic equation for the reaction that occurs when
solutions of CH3COOH and KOH are mixed.
a. H+(aq) + OH-(aq) → H2O(l)
b. H+(aq) + KOH(aq) → H2O(l) + K+(aq)
c. CH3COOH (aq) + OH-(aq) → CH3COO-(aq) + H2O(l)
d. CH3COOH (aq) + KOH(aq) → CH3COOK (aq) + H2O(l)
e. HF(aq) + KOH(s) → H2O(l) + KF(aq)
c. CH3COOH (aq) + OH-(aq) → CH3COO-(aq) + H2O(l)
What is the oxidation number of P in HPO4 2-?
a. -5
b.-6
c. +5
d.+6
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c. +5
In the following reaction, which element is oxidized?
Au(NO₃)₃ (aq) + 3 Li(s) → Au(s) + 3 LiNO₃ (aq)
a. N in Au(NO₃)₃
b. Li
c. Au
d. O in Au(NO₃)₃
e. This is not an oxidation/reduction type of reaction
b. Li
In the following reaction, which element is reduced? Cu (s) + FeSO4 (aq)→ Fe
(s) + CuSO4 (aq)
a. Cu
b. Fe
c. S
d. None, this is not a redox reaction.
b. Fe
When the oxidation-reduction reaction shown here is balanced, how many
electrons are transferred for each atom of copper that reacts? Ag+(aq) +
Cu(s) →Ag(s) + Cu2+(aq)
b. 2
If 225 g of carbon reacts with excess sulfur dioxide to produce 195 g of
carbon disulfide, what is the percent yield for the reaction?5 C + 2 SO2 →
CS2 + 4 CO
a. 15.7%
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b. 19.5%
c. 22.5%
d. 68.4%
e. 78.9%
d. 68.4%
When you touch an ice cube, you sense the transfer of heat from
a. your hand to the air
b. the ice to your hand
c. the ice to the air
d. your hand to the ice
d. your hand to the ice
Which statement about neutralization reactions is true?
a.
The net ionic equation for a neutralization reaction shows the formation of
water.
b.
A weak acid cannot neutralize a strong base.
c.
Organic acids neutralize bases by forming hydrogen gas.
d.
The net ionic equation for a neutralization reaction shows the formation of
soluble salts.
“ CHEMISTRY FOR ENGINEERS - EXAM 2
PRACTICE “LATEST 2025 UPDATED EXAM
2025 – 2026 SOLVED QUESTIONS &
ANSWERS VERIFIED 100% GRADED A+
(LATEST VERSION)
Chemistry for Engineers - Exam 2 Practice
.
If 200 mL of 3.0 M solution were diluted to 300 mL, what would the
concentration be?
a. 0.010 M
b. 0.10 M
c. 2.0 M
d. 10 M
e. 100 M
c. 2.0 M
If the molar concentration of sodium sulfate (Na2SO4) is 0.20 M, what is the
concentration of sodium ion?
a. 0.80 M
b. 0.60 M
c. 0.40 M
, Page 2 of 180
d. 0.20 M
e. 0.10 M
c. 0.40 M
Which one of the following reaction equations is the net ionic equation for
the reaction of nitric acid with sodium hydroxide? All species are in aqueous
solution.
a. HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l)
b. H+ (aq) + NO3- (aq) + Na+ (aq) + OH- (aq) →
Na+ (aq) + NO3- (aq) + H2O (l)
c. H+ (aq) + NO3- (aq) + Na+ (aq) + OH- (aq) →
Na NO3- (aq) + H2O (l)
d. H+ (aq) + OH- (aq) → H2O (l)
d. H+ (aq) + OH- (aq) → H2O (l)
Identify the correct net ionic equation for the reaction that occurs when
solutions of CH3COOH and KOH are mixed.
a. H+(aq) + OH-(aq) → H2O(l)
b. H+(aq) + KOH(aq) → H2O(l) + K+(aq)
c. CH3COOH (aq) + OH-(aq) → CH3COO-(aq) + H2O(l)
d. CH3COOH (aq) + KOH(aq) → CH3COOK (aq) + H2O(l)
e. HF(aq) + KOH(s) → H2O(l) + KF(aq)
c. CH3COOH (aq) + OH-(aq) → CH3COO-(aq) + H2O(l)
What is the oxidation number of P in HPO4 2-?
a. -5
b.-6
c. +5
d.+6
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c. +5
In the following reaction, which element is oxidized?
Au(NO₃)₃ (aq) + 3 Li(s) → Au(s) + 3 LiNO₃ (aq)
a. N in Au(NO₃)₃
b. Li
c. Au
d. O in Au(NO₃)₃
e. This is not an oxidation/reduction type of reaction
b. Li
In the following reaction, which element is reduced? Cu (s) + FeSO4 (aq)→ Fe
(s) + CuSO4 (aq)
a. Cu
b. Fe
c. S
d. None, this is not a redox reaction.
b. Fe
When the oxidation-reduction reaction shown here is balanced, how many
electrons are transferred for each atom of copper that reacts? Ag+(aq) +
Cu(s) →Ag(s) + Cu2+(aq)
b. 2
If 225 g of carbon reacts with excess sulfur dioxide to produce 195 g of
carbon disulfide, what is the percent yield for the reaction?5 C + 2 SO2 →
CS2 + 4 CO
a. 15.7%
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b. 19.5%
c. 22.5%
d. 68.4%
e. 78.9%
d. 68.4%
When you touch an ice cube, you sense the transfer of heat from
a. your hand to the air
b. the ice to your hand
c. the ice to the air
d. your hand to the ice
d. your hand to the ice
Which statement about neutralization reactions is true?
a.
The net ionic equation for a neutralization reaction shows the formation of
water.
b.
A weak acid cannot neutralize a strong base.
c.
Organic acids neutralize bases by forming hydrogen gas.
d.
The net ionic equation for a neutralization reaction shows the formation of
soluble salts.
