How many of the following reactions give yellow ppt.
(i) NaBr + AgNO 3 ⎯→
(ii) Na I + AgNO 3 ⎯→
(iii) NaBr + Pb(NO 3 ) 2 ⎯→
(iv) Na I + Pb(NO 3 ) 2 ⎯→
(v) Na 2 S + Cd(CH 3 COO) 2 ⎯→
(vi) K 2 CrO 4 + Pb(CH 3 COO) 2 ⎯→
(vii) K 2 CrO 4 + AgNO 3 ⎯→
(viii) NaBr + Chlorine water (excess)
Text Solution
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5 (i), (ii), (iv), (v), (vi)
Sol. (i) NaBr + AgNO 3 ⎯→ AgBr ↓ + NaNO 3
Pale Yellow
(ii) Na I + AgNO 3 ⎯→ Ag I ↓ + NaNO 3
Yellow
(iii) NaBr + Pb(NO 3 ) 2 ⎯→ PbBr 2 ↓ + NaNO 3
White
(iv) Na I + Pb(NO 3 ) 2 ⎯→ Pb I 2 ↓ + NaNO 3
Yellow
(v) Na 2 S + Cd(CH 3 COO) 2 ⎯→ CdS ↓ + CH 3 COONa
Yellow
(vi) K 2 CrO 4 + Pb(CH 3 COO) 2 ⎯→ PbCrO 4 ↓ + CH 3 COOK
Yellow
(vii) K 2 CrO 4 + AgNO 3 ⎯→ Ag 2 CrO 4 ↓ + KNO 3
Brick red
(viii) NaBr + Chlorine water ⎯→ 2BrCl
(excess) Yellow solution
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