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  4. 6.3 g of an acid is neutralized by 500 cc of 0.2 N NaOH solution. The equivalent mass of acid is

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Q. 6.3 g of an acid is neutralized by 500 cc of 0.2 N NaOH solution. The equivalent mass of acid is

COMEDKCOMEDK 2008Some Basic Concepts of Chemistry

Solution:

For neutralization, no. of gram equivalents of acid should be equal to no. of gram equivalents of base.
No. of gram equivalents of NaOH
$ = \frac{500 \times 0.2}{1000} = 0.1 $
Now, $ \frac{w}{eq. mass \, of\, acid} = 0.1$
eq. mass of acid = $ \frac{w}{0.1 } = \frac{6.3}{0.1 } = 63$