Write the balanced equations for the reactions when potassium ferrocyanide is heated with concentrated sulphuric acid:

K_{4} F e {(C N)}_{6} + 6 H_{2} {S O}_{4} + 6 H_{2} O \to 2 K_{2} {S O}_{4} + F e {S O}_{4} + 3 {({N H}_{4})}_{2} {S O}_{4} + 6 C O ↑

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K_{4} F e {(C N)}_{6} + 4 H_{2} {S O}_{4} + 6 H_{2} O \to 2 K_{2} {S O}_{4} + F e {S O}_{4} + 3 {({N H}_{4})}_{2} {S O}_{4} + 3 C O ↑

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2 K_{4} F e {(C N)}_{6} + 6 H_{2} {S O}_{4} + 6 H_{2} O \to 4 K_{2} {S O}_{4} + F e {S O}_{4} + 3 {({N H}_{4})}_{2} {S O}_{4} + 6 C O ↑

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None of these

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Solution

The correct option is B $K_{4} F e {(C N)}_{6} + 6 H_{2} {S O}_{4} + 6 H_{2} O \to 2 K_{2} {S O}_{4} + F e {S O}_{4} + 3 {({N H}_{4})}_{2} {S O}_{4} + 6 C O ↑$
potassium ferrocyanide is heated with concentrated sulphuric acid:

$K_{4} F e {(C N)}_{6} + 6 H_{2} {S O}_{4} + 6 H_{2} O \to 2 K_{2} {S O}_{4} + F e {S O}_{4} + 3 {({N H}_{4})}_{2} {S O}_{4} + 6 C O$

Hence option A is correct.

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Similar questions

F e {S O}_{4} \cdot {({N H}_{4})}_{2} \cdot {S O}_{4} \cdot 6 H_{2} O

F e {S O}_{4} \cdot 7 H_{2} O

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F e {S O}_{4} + x ⟶ {N a}_{2} {S O}_{4} + {F e (O H)}_{2}

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

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

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

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

K_{2} {C r}_{2} O_{7} + K I + H_{2} {S O}_{4} \to K_{2} {S O}_{4} + {C r}_{2} {({S O}_{4})}_{3} + I_{2} + H_{2} O

K M n O_{4} + {N a}_{2} {S O}_{3} \to M n O_{2} + {N a}_{2} {S O}_{4} + K O H

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K M {n O}_{4} + H_{2} C_{2} O_{4} + H_{2} {S O}_{4} \to K_{2} {S O}_{4} + {M n S O}_{4} + {C O}_{2} + H_{2} O

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