`25 mL` of `0.2M` phosphorus acid `(H_(3)PO_(3))` neutralises exact `80 mL` of a solution containing `10 g NaOH ( 50% "pure") per dm^(3)`. Report basicity of acid and write balanced chemical equation for neutralisation.

`25 mL` of `0.2M` phosphorus acid `(H_(3)PO_(3))` neutralises exact `8

1.	`25 mL` of `0.2M` phosphorus acid `(H_(3)PO_(3))` neutralises exact `80 mL` of a solution containing `10 g NaOH ( 50% "pure") per dm^(3)`. Report basicity of acid and write balanced chemical equation for neutralisation.
Answer» Meq. of acid`=Meq. of NaOH` `25xx0.2xxn=(10)/(40)xx(50)/(100)xx80` `:. N=2` `:.` Basicity of acid`=2` Neutralisaton reaction: `2NaOH+H_(3)PO_(3)rarrNa_(2)HPO_(3)+2H_(2)O`

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`25 mL` of `0.2M` phosphorus acid `(H_(3)PO_(3))` neutralises exact `80 mL` of a solution containing `10 g NaOH ( 50% "pure") per dm^(3)`. Report basicity of acid and write balanced chemical equation for neutralisation.

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