2CO2 + Ca (OH) 2 = Ca (HCO3) 2
From the condition m (Ca (HCO3) 2) = 8.1 g. We find the amount of calcium bicarbonate substance:
n (Ca (HCO3) 2) = m (Ca (HCO3) 2) / M (Ca (HCO3) 2) = 8.1 / 162 = 0.05 mol.
In the reaction equation, CO2 has a coefficient of 2, and Ca (HCO3) 2 is a factor of 1. Therefore, the amount of CO2 in terms of the amount of Ca (HCO3) 2 can be expressed as follows:
n (CO2) = n (Ca (HCO3) 2) ⋅ 2/1 = 0.05 ⋅ 2 = 0.1 mol,
B (CO2) = n (CO2) ⋅ Vm = 0.1 ⋅ 22.4 = 2.24 L
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.