Kimia Sekolah Menengah Atas bantuu jan ngasal makasii​

bertcrooksulv – March 06, 2023

bantuu
jan ngasal
makasii​

Jawaban:

d. pH = 10

Penjelasan:

Dik :

100ml NH4OH 0,1 M (kb = 10^-5)

100ml (NH4)2SO4 0,005 M

Dit: pH campuran ?

mol NH4OH = 0,1 x 100 = 10 mmol

mol (NH4)2SO4 = 0,005 x 100 = 0,5 mmol

[OH-] = Kb x (mol basa / mol garam x valensi)

[OH-] = 10^-5 x (10 / 0,5 x 2)

[OH-] = 10^-5 x (10 / 1)

[OH-] = 10^-4

pOH = -Log10^-4

pOH = 4

pH = 14 - 4

pH = 10

b. 4-log 2

Penjelasan:

semoga membantu

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