Answer to Question #131229 in General Chemistry for mike

Question

QUESTION 10

1. Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below. When 4.5 g of SO₂ are mixed with excess O₂ and H₂O, how many grams of H₂SO₄ are produced?

Answer 1

$2SO_2+O_2+2H_2O\to 2H_2SO_4$

Given excess of $O_2$ and $H_2O$ ,

$2$ moles of $SO_2$ gives $2$ moles of $H_2SO_4$ .

Hence,number of moles of $H_2SO_4$ produced is equal to number of moles of $SO_2$ consumed .

Mass of $SO_2$ consumed $=4.5 \ g$

Molar mass of $SO_2=64\ g$

Molar mass of $H_2SO_4=98\ g$

Moles of$\ SO_2$ consumed $=\frac{4.5}{64}=$ Moles of $H_2SO_4$ produced.

Mass of $H_2SO_4$ produced $=\frac{4.5}{64}\times 98=6.89\ g$