1.

One molecule of H_(3) PO_(4) is treated with one molecule of NaOH, two molecues of NaOH and three molecules of NaOH separately. Comment on the nature of products formed and write their names.

Answer»

SOLUTION :`H_(3)PO_(4) + NaOH rarr underset("Acidic salt")(NaH_(2)PO_(4) + H_(2)O)`
`H_(3)PO_(4) + 2NaOH rarr underset("Acidic salt")(Na_(2)HPO_(4) + 2H_(2)O`
`H_(3)PO_(4) + 3NaOH rarr underset("NEUTRAL salt")(Na_(3)PO_(4) + 3H_(2)O)`
`NaH_(2)PO_(4) rarr` Sodium dihydrogen phosphate
`Na_(2)HPO_(4) rarr` DISODIUM hydrogen phosphate
`Na_(3)PO_(4) rarr` Sodium phosphate


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