Tolong yang nomor 18 beserta caranya

Jawaban:

5×10^-3

Penjelasan:

Mr CH3COOH = 60

mol CH3COOH = massa / Mr

=> 30 / 60

=> 0,5 mol

V = 1000 ml = 1 L

M = n / V

=> 0,5 / 1

=> 0,5 M ~ 5×10^-1 M

[H+] = √( Ka . Ma )

=> √( 5×10^-5 . 5×10^-1)

=> 5×10^-3 M