1.

Whatvolume of10 % (w/v) solutionof Na_(2)CO_(3) will be requiredto neturalise100 mL of HCl solutioncontaining 3.65 g of HCl ?

Answer»


Solution :`10% Na_(2)CO_(3)(w//v)" solution has NORMALITY "=(10//53)/(100)xx1000=1.89 N""("Eq. wt. of "Na_(2)CO_(3)=(106)/(2)=53)`
`"Normality of HCL solution "=(3.65//36.5)/(100)xx1000=1N`
`{:(" "N_(1)V_(1)=N_(2)V_(2)),((Na_(2)CO_(3))(HCl)),(1.89xxV_(1)=1xx100"or"V_(1)=100//1.89=52.9mL):}`


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