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Unformatted text preview: Ca(OH) 2 + 2 HCl 2 H 2 O + CaCl 2 is plausible: Ca(OH) 2 Ca 2+ + 2 OH-[ slow ] 2 HCl + 2 OH- 2 H 2 O + 2 Cl − Ca 2+ + 2 Cl − CaCl 2 The reaction is found to be first order overall with regard to Ca(OH) 2 The elementary steps add up to the overall reaction The slow step suggests first order with respect to Ca(OH) 2 , matching experimental evidence. X The second elementary step has four reactants This is not a plausible reaction mechanism....
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- Fall '08