Answer to Question #112189 in General Chemistry for Tekeya Moss

Question

How many moles of oxygen are needed to combine with 8.4 moles of H2S?

2H2S + 3O2→2SO2 + 2H2O

Answer 1

The reaction equation is $2H_2S+3O_2\to 2SO_2+2H_2O$

chemical amount of H₂S is 8,4 mol

take into account the reaction coefficients, find chemical amount of O₂: 8,4mol/2*3=12,6mol

Answer:12,6mol.