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Allotropes of Phosphorus

What is x in ...

Question

What is x in the reaction?
$F e {S O}_{4} + x ⟶ {N a}_{2} {S O}_{4} + {F e (O H)}_{2}$

{N a}_{2} {S O}_{4}

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H_{2} {S O}_{4}

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N a O H

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None of these

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Solution

The correct option is C $N a O H$
$F e {S O}_{4} + x ⟶ {N a}_{2} {S O}_{4} + {F e (O H)}_{2}$
$x$ is NaOH, correct equation is,
$F e {S O}_{4} + 2 N a O H ⟶ {N a}_{2} {S O}_{4} + {F e (O H)}_{2}$

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{N a}_{2} {S O}_{4}

N a O H

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(b) H_{2} {S O}_{4} + 2 N a O H \to {N a}_{2} {S O}_{4} + 2 H_{2} O

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