You will have one hour to answer 13 problems similar to these…
1.
The products of the complete combustion of a hydrocarbon are carbon dioxide and water. Write a balanced chemical equation for the combustion of butane,
C
4
H
10
.
2.
What mass of carbon is needed to react completely with 23.14 grams of SiO according to the following equation?
SiO
2
(s) + 3 C(s)  SiC(s) + 2 CO(g)
2
3.
What mass of oxygen is consumed by the complete combustion of 25.0 grams of acetylene?
2 C
2
H
2
(g) + 5 O
2
(g)  4 CO
2
(g) + 2 H
2
O(g)
4.
Nitroglycerine decomposes violently according to the unbalanced chemical equation below. How many total moles of gases are produced from the decomposition of 1.00 mol C
3
H
5
(NO
3
)
3
?
C
3
H
5
(NO
3
)
3
(l)  CO
2
(g) + N
2
(g) + H
2
O(g) + O
2
(g)
5.
How many liters of 0.1107 M NaOH contain 10.00 g of NaOH?
6.
A 25.00 mL sample of NaOH is titrated with 15.23 mL of 0.2250 M HCl.
What is the concentration of the NaOH solution?
7.
What is the pH of 0.36M HCl?
8.
What is the hydroxide ion concentration in problem #7?