ph dari 100 ml larutan ch3cooh 0,009 m adalah... (ka ch3cooh = 10^-5)
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ph dari 100 ml larutan ch3cooh 0,009 m adalah... (ka ch3cooh = 10^-5)
1 Jawaban
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1. Jawaban NLHa
100 mL CH3COOH 0,009 M (Ka = 10^-5)
pH ... ?
[H^+] = √( Ka × Ma )
[H^+] = √( 10^-5 × 0,009 )
[H^+] = √( 10^-5 × 9 × 10^-3 )
[H^+] = √( 9 × 10^-8 )
[H^+] = 3 × 10^-4
pH = - log [H^+]
pH = - log 3 × 10^-4
pH = 4 - log 3