Answer to Question #173390 in Chemistry for seng

Question

How many grams of NaN₃ are required to produce 12.0 ft³ of N₂ if the gas has a

          density of 1.25g/L?

Answer 1

2NaN₃ = 2Na + 3N₂

12.0 ft³ = 340 l

n (N₂) = V/22.4 = 340 / 22.4 = 15.2 mol

According to the equation, n (NaN₃) = 2/3 x n (NaN₂) = 2/3 x 15.2 = 10.1 mol

n = m/M

m = n x M

M (NaN₃) = 65 g/mol

m (NaN₃) = 10.1 x 65 = 657.7 g