Question

0.3 g of an acid is neutralised by 40 cm3 of 0.125 N NaOH. Equivalent mass of the acid is 

Solution

Correct option is

60

 

0 cm3 of 0.125 N NaOH  neutralise acid = 0.3 g

                                                                                            = 60 g

1000 cm3 of N NaOH contain one gram equivalent of NaOH. It willneutralise one gram equivalent of the acid.

Hence, equivalent weight of acid = 60

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