Nelson Chemistry Chapter 7 Quiz
Click on the correct answer
1
Hydrochloric acid is used to clean rust from iron. The equation for this reaction
can be written as:
3HCl(aq) + Fe(OH)
3
(s) --> FeCl
3
(aq) + 3HOH(l)
The mass of rust that can be removed with 25 mL of 0.50 mol/L hydrochloric acid is
4.0 g
0.45 g
72 g
0.30 g
2
Use the following information to answer this question.
CH
4
(g) + 2O
2
(g) --> CO
2
(g) + 2H
2
O(g)
The mass of CO
2
(g) that can be produced by the reaction of 12.8 g of CH
4
(g) with 38.0 g of O
2
(g) is
13.1 g
26.1 g
35.1 g
0.594 g
3
What volume of dry O
2
(g) at STP is produced by heating 80.0 g of KClO
3
(s)?
2KClO
3
(s) -----> 2KCl(s) + 3O
2
(g)
14.6 L
21.9 L
22.4 L
51.5 L
4
Hydrogen gas reacts with hot copper(II) oxide according to the equation:
H
2
(g) + CuO(s) ----> Cu(s) + H
2
O(g)
The number of moles of water formed when 159 g of CuO are completely reduced to copper metal is
1.00
2.00
1.50.
1.59
5
0.250 mol of methanol CH
3
OH(g) is completely burned according to the equation:
2CH
3
OH(l) + 3O
2
(g) ----> 2CO
2
(g) + 4H
2
O(g) + heat
What volume of CO
2
(g) measured at 298 K and 101 kPa is produced?
6.11 L
22.4 L
44.8 L
48.9 L
6
The maximum yield of copper obtained from the reduction of 795 g of CuO by dry H
2
(g) according to the equation
CuO(s) + H
2
(g) ----> Cu(s) + H
2
O(g)
is
63.5 x 1 g
63.5 x 10 g
63.5 x 22.4 g
63.5 x 18 g
7
What mass of CaCO
3
(s) is required to produce 84 g of CaO(s)?
CaCO
3
(s) ----> CaO(s) + CO
2
(g)
66.6 g
84.0 g
100 g
150 g
8
A reaction vessel was filled with 8 g of H
2
(g) and 32 g of O
2
(g); the mixture was exploded. Which one of the following statements is true?
After the reaction, the vessel would contain 6 g of H
2
(g).
The reaction consumed heat energy
18 g of water would be produced.
All of the oxygen gas would be used up in the reaction.
9
A student titrates a 10.00 mL sample of sulfuric acid with 13.8 mL of 0.100 mol/L sodium hydroxide. The concentration of the sulfuric acid is:
0.0362 mol/L
0.276 mol/L
0.138 mol/L
0.0690 mol/L
10
Use the following information to answer this question.
Janice collected the following information during a reaction between solutions of Na
2
CO
3
(aq) and Co
2
(SO
4
)
3
(aq).
Volume of Na
2
CO
3
(aq)........................................... 450 mL
Volume of Co
2
(SO
4
)
3
(aq)..................................... 350 mL
Mass of Co
2
(CO
3
)
3
(aq) + filter paper ...............................14.9 g
Mass of filter paper................................................ 1.03 g
What is the concentration of the sodium carbonate solution?
0.104 mol/L
0.311 mol/L
0.692 mol/L
0.400 mol/L