Untitled.notebook
January 06, 2014
I. Mass ­ Volume Problems What volume of hydrogen at STP can be produced when 6.54 g of Zn reacts with
hydrochloric acid, HCl?
H2 + ZnCl2 Zn + 2 HCl
II. Gas ­ Volume ­ Mass Problems How many grams of NaCl can be produced by the reaction of 0.112 liters of chlorine gas at STP with excess sodium? Cl2 + 2 Na
2 NaCl III. Volume ­ Volume At STP, you can make a volume­volume ratio. It is just like a mole­mole ratio. What volume of bromine gas is produced if 75.2 liters of Cl2 react with HBr? (Assume STP) 1
Untitled.notebook
January 06, 2014
Ammonia can react with oxygen to produce nitrogen and
water according to the following equation.
4NH3(g) + 3O2(g) ­­> 2N2(g) + 6H2O(l)
If 1.78 L of O2 reacts, what volume of nitrogen will be produced?
Assume that temperature and pressure remain
constant.
When arsenic(III) sulfide is roasted in air, it reacts with oxygen
to produce arsenic(III) oxide and sulfur dioxide according
to the following equation.
2As2S3(s) + 9O2(g) ­­> 2As2O3(s) + 6SO2(g)
When 89.5 g of As2S3 is roasted with excess oxygen, what volume
of SO2 is produced? The gaseous product is measured at
20°C and 98.0 kPa.
2