Question

what is the molar mass mass of (KOH)? at mass K=39, O=16 ,H=1

Answer 1

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The molecular formula of potassium hydroxide is KOH.

Its molecular mass is = =56u

The expression for the equivalent weight of KOH is as given below.

Equivalent weight =    [tex]\sf\dfrac{Molecular~ Mass}{No.~ of~ replaceable~ OH~ groups }[/tex]

potassium hydroxide contains one rplaceable OH group.

Substitute values in the above expression.

Equivalent weight =  $\sf\dfrac{56}{1}$ =56u

Answer 2

Answer:

Molar mass of KOH =Atomic mass of K × Atomic mass of O × Atomic mass of H

39×16×1 = 624 u.