Chemistry Test 3/8/16

Question 1

Calcium carbonate decomposes at 1200°C to form carbon dioxide and calcium oxide. If 25 liters of carbon dioxide are collected at 1275°C, what will the volume of this gas be after it cools to 25°C?

Answer 1

Charels’s Law (V₁ / T₁ = V₂ / T₂₎

25L/1275°C(=1548K)=V/85°C(=298K)

1548V=7450

V= 4.81L