Jawabanmu

2014-06-26T11:07:03+07:00
H⁺ =√Ka × M
[H⁺]² = Ka × M
[0,025]² = Ka × 0,1
[0,000625] = Ka×0,1
Ka = {0,000625/}{0,1} 
ka = 0,00625

α= √ka/M
α= √ 0,00625 / 0,1
α=√0,0625
α= 0,25

MOHON maaf kalau slah :)