Correct formula of complex 'A' is

Question

$\underset{(yellow colour)}{P b C r O_{4} (s)} + (excess) N a O H (a q) \to A (soluble complex) + \underset{[yellow colour]}{N a_{2} C r O_{4} (a q)}$

$Correct formula of complex 'A' is$

Smart Achievers · Accepted Answer

(2)

$P b C r O_{4} + 4 N a O H \to N a_{2} [P b {(O H)}_{4}] + N a_{2} C r O_{4}$

Solution

Q.
$\underset{(yellow colour)}{P b C r O_{4} (s)} + (excess) N a O H (a q) \to A (soluble complex) + \underset{[yellow colour]}{N a_{2} C r O_{4} (a q)}$

$Correct formula of complex 'A' is$

1 $P b {(O H)}_{2}$

2 $N a_{2} [P b {(O H)}_{4}]$

3 $N a_{3} [P b {(O H)}_{6}]$

4 $N a_{4} [P b {(O H)}_{5}]$

Ans.
(2)

$P b C r O_{4} + 4 N a O H \to N a_{2} [P b {(O H)}_{4}] + N a_{2} C r O_{4}$

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Solution

Q. PbCrO4(s)(yellow colour)+(excess) NaOH(aq)→A(soluble complex)+Na2CrO4(aq)[yellow colour] Correct formula of complex 'A' is

1 Pb(OH)2

2 Na2[Pb(OH)4]

3 Na3[Pb(OH)6]

4 Na4[Pb(OH)5]

Ans. (2) PbCrO4+4NaOH→Na2[Pb(OH)4]+Na2CrO4