Given the reaction equation C + O2 = CO2 The mass of carbon is 60 grams Find: 1) The mass of carbon dioxide
Given the reaction equation C + O2 = CO2 The mass of carbon is 60 grams Find: 1) The mass of carbon dioxide 2) The volume of oxygen (O2)
To solve this problem, we write down given: m (C) = 60 g.
Find: the mass of carbon dioxide and the volume of oxygen.
Decision:
Let’s write down the reaction equation.
C + O2 = CO2
Let’s calculate the molar masses of carbon and carbon dioxide.
M (C) = 12 g / mol
M (CO2) = 12 + 16 * 2 = 44 g / mol
We write 60 g above the carbon, and 12 g below the carbon.
We write x g over carbon dioxide and 44 g under carbon dioxide.
Let’s compose and solve the proportion.
x = 60 * 44/12 = 220 g.
Above oxygen we write y l, and under oxygen we write a constant molar volume, which is 22.4 l / mol.
Let’s compose and solve the proportion.
y = 60 * 22.4 / 12 = 112 l
Answer: m (CO2) = 220 g; V (O2) = 112 HP