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Byju's Answer

Standard XII

Chemistry

Properties of Oxygen

When Na2HPO...

Question

When $N a_{2} H P O_{4} + N H_{4} O H$ is added to white $M g (N O_{3})_{2}$ solution, white ppt. is obtained on heating this precipitate. Which of the following is observed?

Brown residue is obtained.

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One basic gas and one acidic gas are evolved.

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One basic gas and one neutral oxide are evolved.

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One of gas produce yellow ppt with

P t C l_{6}

and other gas turns anhydrous

C u S O_{4}

in to blue.

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Solution

The correct options are
C One basic gas and one neutral oxide are evolved.
D One of gas produce yellow ppt with $P t C l_{6}$ and other gas turns anhydrous $C u S O_{4}$ in to blue.
$M g (N H_{4}) P O_{4} Δ - \to M g_{2} P_{2} O_{7} + N H_{3} + H_{2} O$
white ppt white
$N H_{3} + H_{2} P t C I_{6} \to (N H_{4}) P t C I_{6} (yellow)$
$C u S O_{4} (s) + H_{2} O \to C u S O_{4} .5 H_{2} O (Blue)$

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When Na2HPO4+NH4OH is added to white Mg(NO3)2 solution, white ppt. is obtained on heating this precipitate. Which of the following is observed?

The correct options are C One basic gas and one neutral oxide are evolved. D One of gas produce yellow ppt with PtCl6 and other gas turns anhydrous CuSO4 in to blue.Mg(NH4)PO4Δ−→Mg2P2O7+NH3+H2O white ppt white NH3+H2PtCI6→(NH4)PtCI6(yellow)CuSO4(s)+H2O→CuSO4.5H2O(Blue)

When $N a_{2} H P O_{4} + N H_{4} O H$ is added to white $M g (N O_{3})_{2}$ solution, white ppt. is obtained on heating this precipitate. Which of the following is observed?