Question

How many liters of H2 are equal to 11.1 g of H2 gas at STP?

Answer 1

V = 123.3 L

Step-by-step explanation

Given:

mass of H2 = 11.1 g

At STP

Required: Volume of H2

Solution

At STP 1 mole =22.4 L

Step 1: Calculate the number of moles of H2

n = m/M

n = 11.1g/2.016g/mol

n = 5.5 mol

Step 2: Calculate the volume

1 mole =22.4 L

5.5 mole = x liters

V = 123.3 L