F.4 一條Chem MC題 急

Ans : A 0.005M

2014-01-05 19:56:18 補充：
2HCl + Ba(OH)₂ --> BaCl₂ + H₂O

no. of mole of HCl = (0.03)(25/1000) = 0.00075
no. of mole of Ba(OH)₂ = (0.01)(25/1000) = 0.00025
no. of mole of HCl reacted with Ba(OH)₂ = (2)(0.00025) = 0.0005

no. of mole of HCl remaining = 0.00075 - 0.0005 = 0.00025

2014-01-05 19:56:57 補充：
Conc. of H⁺ = (0.00025)/[(25+25)/1000] = 0.001 M

2014-01-05 19:58:39 補充：
打錯了 :

Conc. of H⁺ = (0.00025)/[(25+25)/1000] = 0.005 M