Question

Charcoal is primarily carbon. What mass of CO2 is produced if you burn enough carbon (in the form of charcoal) to produce 4.90kJ×102kJ of heat? The balanced chemical equation is as follows: C(s)+O2(g)→CO2(g),ΔH∘rxn=−393.5kJ

Express the mass in grams to three significant figures.

Answer 1

Ans :- Hence, Mass of CO₂ Produced = 54.8 g

Explanation :-

Given chemical equation is :

C(s) + O₂(g)-------------> CO₂(g) , ΔH⁰_rxn = −393.5 kJ

From this equation it is cleared that,

- 393.5 KJ of heat is evolved by the production of = 1 mol or 44g of CO₂

So,

1.0 KJ of heat is evolved by the production of = 44g of CO₂ / 393.5 KJ

and

4.90 x 10² KJ of heat is evolved by the production of = 44g x 4.90 x 10² KJ / 393.5 KJ of CO₂

= 54.8 g

Hence, Mass of CO₂ Produced = 54.8 g