Question

[Chemistry]
{URGENT HELP REQUEST}
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Answer 1

Answer:

a) The common anion is the Nitrate ion because nitrate produces nitrogen when it gets decomposed. This nitrogen gas is brown in colour.

b) X on heating melts and gives off only one gas which re - lights a glowing splint. So we can confirm the the cation of x must be either Sodium or Potassium.

c) The metal ion presnt in Y is the Lead ion.

$\mathrm{Pb(NO_3)_2} \ \ \ \longrightarrow ^{\Delta} \ \ \mathrm{PbO + NO_2 + O_2}$

d) Turning mosit red litmus paper blues confirms its a base. And we know that Sodium hydroxide with ammonium ion gives Ammonia. So Z must have the Ammonium as its cation.

e)

1) $\mathrm{KNO_3 + H_2 SO_4} \ \ \ \longrightarrow_{\mathrm{<200^{\circ} C}} \ \ \ \mathrm{KHSO_4 + HNO_3}$

2) $\mathrm{2Pb(NO_3)_2} \ \ \ \longrightarrow ^{\Delta} \ \ \mathrm{2PbO + 4NO_2 + O_2}$

3) $\mathrm{Cu + 4HNO_3} \ \ \ \longrightarrow \ \ \mathrm{Cu(NO_3)_2 +2NO_2 + H_2O}$

Hope this helps : )

Answer 2

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HERE IS UR ANSWER

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1. Nitrate
2. Sodium or potassium
3. lead
4. ammonium