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Aqueous Solutions
Test Description: Aqueous Solutions Review
Instructions: Answer all questions to get your test result.
1) Which of the following is a substance whose water solution conducts electricity?
A
Silicon dioxide
B
Silver
C
Magnesium chloride
D
carbon tertrachloride
2) Which of the following increases the rate of dissolving a solid in water?
A
decreasing the temperature
B
let it sit still (no stirring)
C
crushing the solid
D
using larger pieces of solid
3) As temperature increases, the solubility of solids ___________ while the solubility of gases ____________
A
increases, decreases
B
increases, increases
C
decreases, decreases
D
decreases, increases
4) How many moles of ions are produced from the dissociation of 1 mol of Fe2(SO4)3
A
2
B
6
C
4
D
5
5) Which of the following shows the dissociation of NaCl (s)
A
Na + Cl => NaCl
B
Na+1 + Cl-1 => NaCl
C
NaCl => Na + Cl
D
NaCl => Na+1 + Cl-1
6) When solutions of NaOH and Ba(NO3)2 are combined, what precipitate forms?
A
Sodium Nitrate
B
Barium Nitrate
C
Barium Hydroxide
D
Sodium Hydroxide
7) What is the boiling point elevation of a 0.7 molal solution of aqueous MgBr2 (Kb = 0.51 C/m)
A
101.071 C
B
100.357 C
C
0.357 C
D
1.071 C
8) What is the freezing point depression of a 0.06 sugar solution dissolved in water (Kf= -1.86 m/C)
A
--1.0044 C
B
-2.009 C
C
--0.1116 C
D
--0.3348 C
9) In the following equation: AgNO3(aq) + NaCl(aq) => what is the formula of the precipitate that is formed?
A
Na(NO3)2
B
NaNO3
C
AgCl
D
AgCl2
10) What is the balanced net ionic equation for the formation of PbCl2?
A
Pb(aq) + Cl(aq) => PbCl2(s)
B
Pb(aq) + 2Cl(aq) => PbCl2(s)
C
Pb+2(aq) + 2Cl-1(aq) => PbCl2(s)
D
Pb+2(aq) + Cl-1(aq) => PbCl2(s)
*select an answer for all questions
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