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20 grams of CaCO3 is heated, how much calcium oxide will produce?(a) 5.6 grams(b) 11.2 grams(c) 22.4 grams(d) 44.8 gramsI had been asked this question during an online interview.Enquiry is from Stoichiometry topic in section The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering |
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Answer» RIGHT choice is (b) 11.2 grams Explanation: The balance CHEMICAL reaction is CACO3 -> CaO + CO2, MOLES of CaO = moles of CaCO3 = 20/100 = 0.2, => amount of CaO = 0.2*56 = 11.6 grams. |
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