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Q.

The molecular mass of caustic potash is?

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a

K2OH= 95 gmol-1   

b

KOH=56 gmol-1   

c

K(OH)2=73 gmol-1   

d

KOH=58 g mol-1 

answer is B.

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Detailed Solution

Potassium has valency +1 and is represented as K+, hydroxyl has valency −1 and is represented as OH-. Caustic potash is KOH. Molar mass - (39+16+1) = 56 g mol-1
 
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