Question

How will you prepare 100 ml of 0.4 M solution of KOH (Molar
56 g/mol)?
mass
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Answer 1

Answer:

Answer

Molarity=

GMW of KOH

Weight of KOH

×

Vol(ml)

1000

[GMW of KOH= Atomic weight of K+ atomic weight of O+ atomic weight of H=10+16+1=27]

⇒0.1=

27

Weight of KOH

×

100

1000

Weight of KOH=

10

2.7

Weight of KOH=0.27 g