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10 grams of NaCl and 1.8 grams of H2O are reacted, how much sodium hydroxide will produce?(a) 4 grams(b) 10 grams(c) 40 grams(d) 80 gramsI have been asked this question in a job interview.Origin of the question is Stoichiometry Applications Terminology topic in division The Chemical Reaction Equation & Stoichometry, Material Balances for Processes Involving Reaction and Multiple Units of Basic Chemical Engineering

Answer»

The CORRECT answer is (a) 4 grams

For explanation I would say: The balanced chemical reaction is NaCl + H2O -> NaOH + HCl, in this CASE H2O is a LIMITING REAGENT, => moles of NaOH = moles of H2O = 1.8/18 = 0.1, => weight of NaOH = 0.1*40 = 4 grams.



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