Question

Find out mass of H2SO4 required to add in 8L of 0.1m nh4oh solution to prepare a buffer solution of Poh 4,kb of nh4oh =10^-5.​

Answer 1

Find out mass of H2SO4 required to add in 8L of 0.1m nh4oh solution to prepare a buffer solution of Poh 4,kb of nh4oh =10^-5.

Mass of H2SO4 required to add in 8L of 0.1m

Nh4oh solution to prepare a buffer solution of Poh 4,kb of nh4oh =10^-5.

H2So4 + 2NH2OH ----> (NH4)2 So4 + 2H2O

Mole of H2So4 = 0.08 mole

Mass of H2So4 = 0.08×98

= 7.84

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