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How many grams of CO2 are produced when 12 g of carbon burns completely?
A22 g
B88 g
C66 g
D44 g
Answer & Solution
Correct answer: A. 22 g
1. C + O2 -> CO2.
2. Moles of C = 12 / 12 = 1 mole.
3. One mole of C gives one mole of CO2.
4. Mass of CO2 = 1 * 44 = 44 g.
5. So burning 12 g of C yields 44 g of CO2.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 5 'Mole Concept and Stoichiometry'_
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