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

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nkirotedoreen46 nkirotedoreen46 · Answer 1 · 2019-11-05T09:52:03+01:00

15 moles

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

mahima6824soni mahima6824soni · Answer 2 · 2022-03-16T09:42:53+01:00

15 moles of CO₂ are produced when 5.0 mol of boron carbonate decomposes completely.

Decomposition reaction are those in which one reactant is decompose or breakdown into two or more products.

The reaction is

[tex]\rm B_2(CO_3)_3(s) = B_2O_3(s) + 3CO_2(g)[/tex]

Moles of boron carbonate is 5.0 mol

The mole ratio will be

[tex]\rm B_2(CO_3)_3 : CO_2[/tex]

1 : 3

Therefore, the mole of CO₂ = mole of B₂(CO₃)₃ × 3 = 15 mol

Thus, the correct option is A, 15 mol.

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