1.

A solution containing Na_(2)CO_(3) and NaOH requires 300ml of 0.1 N HCl using phenolphthalein as an indicator. Methyl orange is then added to the above titrated solution when a further 25ml of 0.2 N HCl is required . The amount of NaOH present in solution is ( NaOH = 40, Na_(2)CO_(3) = 106 )

Answer»

0.6g
1.0 G
1.5 g
2.0 g

ANSWER :B


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