SATHEE: The dand fblock elements

The dand fblock elements - Result Question 57

####57. $K_{2} C r_{2} O_{7}$ on heating with aqueous $N a O H$ gives

(a) $C r O_{4}^{2 -}$

(b) $C r (O H)_{3}$

(d) $C r (O H)_{2}$

[1997]

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Solution:

(a) $K_{2} C r_{2} O_{7} + 2 N a O H ⟶$

$K_{2} C r O_{4} + N a_{2} C r O_{4} + H_{2} O$

Hence $C r O_{4}^{2 -}$ ion is obtained.

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The dand fblock elements - Result Question 57

Solution:

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