Hitunglah pH larutan berikut! a. 0,37 gram Ca(OH) dalam 50mL larutan b. larutan CH(3)COOH 0,2 M, jik.... Question from @jnxnaufal

September 2018 2 32 Report

Hitunglah pH larutan berikut!
a. 0,37 gram Ca(OH) dalam 50mL larutan
b. larutan CH(3)COOH 0,2 M, jika harga a (alfa) = 0,1

bimodwinoviantoro A. m = n÷v
= 0,006 : 0,05
= 0,12
pOH= - log OH-
= - log 1,2 x 10pangkat -1
= 1 - log 1,2
pH + POH = 14
pH + 1 - log 1,2 = 14
pH = 13 + log 1,2

b.

0 votes Thanks 2

jnxnaufal Terimakasih sudab membantu, thanks a lot

Risep A.
Mr Ca(OH)₂ = 74
$M= \frac{gr/Mr}{V} \\ \\ = \frac{0,37/74}{0,05} \\ \\ =0,1 \\ \\ =10^{-1}~M$

$[OH^-]=b.M \\ \\ =2.10^{-1} \\ \\ \\ pOH=-log[OH^-] \\ \\ =-log2.10^{-1} \\ \\ =1-log2 \\ \\ \\ pH=14-pOH \\ \\ =14-(1-log2) \\ \\ =13+log2$

b.
Ka = α²M
$[H^+]= \sqrt{Ka.M} \\ \\ = \sqrt{ \alpha^2.M^2} \\ \\ = \sqrt{10^{-2}.4.10^{-2}} \\ \\ = \sqrt{4.10^{-4}} \\ \\ =2.10^{-2} \\ \\ \\ pH=-log[H^+] \\ \\ =-log2.10^{-2} \\ \\ =2-log2$

1 votes Thanks 2

jnxnaufal Terimakasih sudah membantu, thanks a lot

Risep your welcome :)

About Us

Life Enjoy

" Life is not a problem to be solved but a reality to be experienced! "

Diketahui vektor a = I - 2J + K vektor b = I + J - K. Proyeksi orthogonal vektor a pada vektor b adalah

Satu mL NaOH 1 M ditambah ke dalam 1 liter air maka larutan ini. mempunyai pH?

Recommend Questions

Life Enjoy

Get in touch

Social