Name ___Mr. Perfect____________________________________ Date _____Sp 16________________
1. Balance the following equation: (2 pts)
B2Br6 + 6HNO3  2B(NO3)3 + 6HBr
2. Calculate the mass (in Kg) of water produced from the combustion of 3.8 L (1 gallon) gasoline. (4 pts)
C8H18 + 12½ O2  8CO2 + 9H2O
Density of gasoline (d = 0.79 g/mL)
Calculate the mass of gasoline:
3.8 𝐿 ×
1000 𝑚𝐿 0.79 𝑔
×
= 3002 𝑔 𝐶8 𝐻18
1𝐿
𝑚𝐿
Calculate the mass of water:
3002 𝑔 𝐶8 𝐻18 ×
𝑚𝑜𝑙
9 𝑚𝑜𝑙 𝐻2 𝑂
18 𝑔
×
×
= 4266 𝑔 𝐻2 𝑂 𝑜𝑟 𝟒. 𝟑 𝒌𝒈 𝑯𝟐 𝑶
114 𝑔 1 𝑚𝑜𝑙 𝐶8 𝐻18 𝑚𝑜𝑙
3. Calculate the theoretical yield for the production of methanol when 356 g of carbon monoxide is
mixed with 65.0 g of molecular hydrogen. (4 pts)
CO(g) + 2H2(g)  CH3OH(l)
356 𝑔 𝐶𝑂 ×
𝑚𝑜𝑙 1 𝑚𝑜𝑙 𝐶𝐻3 𝑂𝐻
×
= 12.7 𝑚𝑜𝑙
28 𝑔
1 𝑚𝑜𝑙 𝐶𝑂
65.0 𝑔 𝐻2 ×
𝑚𝑜𝑙
2𝑔
×
1 𝑚𝑜𝑙 𝐶𝐻3 𝑂𝐻
2 𝑚𝑜𝑙 𝐻2
𝐶𝑂 𝑖𝑠 𝑡ℎ𝑒 𝑙𝑖𝑚𝑖𝑡𝑖𝑛𝑔 𝑟𝑒𝑎𝑐𝑡𝑎𝑛𝑡
= 16.3 𝑚𝑜𝑙
Theoretical Yield
32 𝑔
12.7 𝑚𝑜𝑙 𝐶𝐻3 𝑂𝐻 ×
= 𝟒𝟎𝟔 𝒈 𝑪𝑯𝟑 𝑶𝑯
𝑚𝑜𝑙
Chemistry 101 Quiz 2