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Question

# The normality of 26% (wt/vol) solution of ammonia (density=0.855) is approximately:

A
1.5
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B
0.4
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C
15.3
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D
4
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Solution

## The correct option is C 15.3The equivalent weight of NH3=17 The concentration of NH3 solution is 26% (wt/vol). So 100 ml of NH3 solution will have 26 g of NH3.The number of gram equivalents of NH3= Weight Equivalent weight=2617g eq=1.53g eqThe volume of solution =100ml= 100 mL 1000 mL/L =0.1L∴ Normality of NH3= number of gram equivalents of NH3 volume of solution (in L) =1.53 g eq 0.1 L=15.3NHence, option C is correct.

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