Boron carbonate decomposes into boron oxide and carbon dioxide. How many moles of CO2

are produced when 5.0 mol of boron carbonate decomposes completely?

1 B2 (CO3) - 1 B, 0,3 CO,

O

A. 15 mol

OB. 1.67 mol

O

C. 5 mol

O D. 8 mol

15 moles

Explanation:

The decomposition of boron carbonate is given by the equation;

B₂ (CO₃) ₃ (s) → B₂O₃ (s) + 3CO₂ (g)

Moles of boron carbonate decomposed is 5.0 mol

To find the moles of CO₂ produced we are going to use the mole ratio.

Mole ratio of B₂ (CO₃) ₃ to CO₂ is 1 : 3

Therefore;

Moles of CO₂ = Moles of B₂ (CO₃) ₃ * 3

= 15 mol

Therefore, 15 moles of CO₂ will be produced