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What products are formed ? When : (i)D...

What products are formed ? When :
(i)Disodium hydrogen phosphate is added to magnesium sulphate in presence of ammonium chloride and aqueous ammonia.
(ii)A solution containing `Zn^(2+)` ions is poured in an aqueous ammonia.
(iii)`Bi(NO_(3))_(3)` solution is mixed with `KI` and then resulting precipitate is heated with water.
(iv)Disodium hydrogen phosphate is boiled with concentrated `HNO_(3)` and ammonium molybdate reagent.

Text Solution

Verified by Experts

The correct Answer is:
(i)`Mg^(2+) +NH_(3) +HPO_(4)^(2-) to Mg(NH_(4))PO_(4) darr` (white)
(ii)`Zn^(2+) + 2NH_(4)OH to Zn(OH)_(2) darr ("white") +2NH_(4)^(+)`
`Zn(OH)_(2)+4NH_(4)OH to [Zn(NH_(3))_(4)](OH)_(2) +4H_(2)O`
(iii)`Bi^(3+) + 3I^(-) to BiI_(3) darr` (black).
`BiI_(3) darr + H_(2)O overset(Delta)to BiOI darr` (orange)`+2H^(+) +2I^(-)`
(iv)`Na_(2)HPO_(4) +12 (NH_(4))_(2)MoO_(4) +23HNO_(3) to underset(("canary yellow"))((NH_(4))_(3)PMo_(12))O_(40) darr + 2NaNO_(3) +21NH_(4)NO_(3) +12H_(2)O`
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