1. When solid copper metal reacts with nitric acid, the products include copper (II) ion and nitrogen monoxide gas. If 11.99 g of solid copper are reacted with 153 mL of 0.322 M HNO3, how many liters of nitrogen monoxide will be produced?

Question

2. When solid copper metal reacts with nitric acid, the products include copper (II) ion and nitrogen monoxide gas. If 11.99 g of solid copper are reacted with 153 mL of 0.322 M HNO3, how many liters of nitrogen monoxide will be produced? (Assume the released gas is at standard temperature and pressure.)

Answer 1

3Cu + 8HNO3 ==> 3Cu(NO3)2 + 2NO + 4H2O

mols Cu = grams/molar mass
Using the coefficients in the balanced equation, convert mols Cu to mols NO.
Now convert mols NO to L at STP. 1 mol NO gas at STP occupies 22.4 L.