Hitunglah ph dan poh larutan 200 ml larutan 0,05 m h2so4

Hitunglah ph dan poh larutan 200 ml larutan 0,05 m h2so4

Jawaban Terkonfirmasi

Diketahui :
Volume larutan H2SO4 = 200 ml
Molaritas H2SO4 = 0,05 M

Ditanya : pH dan pOH ?

Jawab :

Mencari H+ :
[H+] :
= a . Ma
= 2 . 0,05 M
= 10-¹ M

pH :
= – log [H+]
= – log 10-¹
= 1

pOH :
= 14 – pH
= 14 – 1
= 13

[ H+] = $sqrt{a * Ma}$
   = $sqrt{ 2 *200*0,05}$
   = $sqrt{20}$
   = 2 $sqrt{5}$
pH= -log [ H+]
   = – log 2 $sqrt{5}$
   = $sqrt{5}$ – log 2