Calcium oxide and water react in an exothermic reaction:
CaO(s) + H2O(l)→Ca(OH)2(s) ΔH°rxn = –64.8 kJ/mol
How much heat would be liberated when 7.15 g CaO(s) is dropped into a beaker containing 152g H2O?
(A) 1.97 x 10–3 kJ
(B) 8.26 kJ
(C) 508 kJ
(D) 547 kJ
(E) 555 kJ
