
Practice - Enthalpy of solution
Authored by Ben Meacham
Science
11th Grade
NGSS covered
Used 3+ times

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5 questions
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1.
CATEGORIZE QUESTION
3 mins • 1 pt
Organize the following characteristics as either endothermic or exothermic
Groups:
(a) Endothermic
,
(b) Exothermic
Energy of solute increases
Temp of water decreases
Energy of solute decreases
Energy of water decreases
Sign of q for solute is negative
sign of q for solute is positive
Temp of water increases
Sign of q for water is positive
Sign of q for water is negative
Energy of water increases
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tf = 29.5 0C
Tf = 32.7 0C
Tf = 26.4 0C
Tf = 36.8 0C
Answer explanation
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
3.
REORDER QUESTION
1 min • 1 pt
If 1 mol of each solute is dissolved in 500 mL of water, rank the resulting solutions from warmest (1) to coldest (4)
LiNO3
NaC2H3O2
KMnO4
KOH
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
In a chemistry experiment to investigate the properties of fertilizer, 10.0 g of urea, NH2CONH2 (s), is dissolved in 150.0 mL of water. A temperature change from 20.4 0C to 16.7 0C is measured. Calculate the molar enthalpy of solution for the fertilizer urea.
ΔHsoln = +17.7 kJ/mol
ΔHsoln = -13.9 kJ/mol
ΔHsoln = +14.9 kJ/mol
ΔHsoln = +10.5 kJ/mol
Answer explanation
Tags
NGSS.HS-PS3-4
NGSS.HS-PS3-1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The molar enthalpy of solution of ammonium chloride is +14.8 kJ/mol. What would be the final temperature of a solution in which 40.0 g of ammonium chloride is added to 200.0 mL of water, initially at 25 0C?
12.7 0C
10.5 0C
11.4 0C
13.9 0C
Answer explanation
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
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