Question

How many liters of 1.5 M HCl solution would react completely with 6.5 moles Ca(OH)2? Ca(OH)2(s) + 2 HCl(aq) yields CaCl2(aq) + 2 H2O(l) 2.2 L HCl(aq) 4.9 L HCl(aq) 8.7 L HCl(aq) 1.9 L HCl(aq)

Answer 1

First, multiply the 6.5 moles by the mole ratio of 2/1, which yields 13 moles of HCL. Then, divide 13/1.5, which yields an answer of 8.7 L HCL(aq), or C.

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