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A sample of MGCO(3) is dissolved in dill...

A sample of `MGCO_(3)` is dissolved in dill . HCl and the solution is neutralized with ammonia and buffered with `NH_(4)Cl//NH_(4)OH` . Disodium hydrogen phosphate reagent is added to the resulting solution . A white precipitate is formed .What is the formula of the precipitate ?

A

`Mg_(3)(PO_(4))_(2)`

B

`Mg(NH_(4))PO_(4)`

C

`MgHPO_(4)`

D

`Mg_(2)P_(2)O_(7)`

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