(i) How many moles of NaHCO3 are there in the equation? (ii) What is the mass of CO2 produced in the equation?

Question

Sodim bicarbonate breaks down on heating as follows: 

2NaHCO₃ → Na₂CO₃ + H₂O + CO₂ (Atomic mass of Na = 23, H = 1, C = 12, O = 16)

(i) How many moles of NaHCO₃ are there in the equation?

(ii) What is the mass of CO₂ produced in the equation?

(iii) How many moles of water molecules are produced in the equation?

(iv) What is the mass of NaHCO₃ used in this equation?

(v) What is the volume occupied by CO₂ in this equation?

Answer 1

(i) 2 moles.

(ii) 44 g

(iii) 1 mole.

(iv) = 2[23 + 1 + 12 + 3(16)] 

= 2[84] 

= 168 g

(v) 22.4 lit.