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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 grams |
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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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