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Diagonal Relationship (Group 1)

Select the co...

Question

Select the correct order of thermal stability of bicarbonates :

N a H C O_{3} > K H C O_{3} > R b H C O_{3} > C s H C O_{3}

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R b H C O_{3} > C s H C O_{3} > N a H C O_{3} > K H C O_{3}

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K H C O_{3} > R b H C O_{3} > C s H C O_{3} > N a H C O_{3}

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N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

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Solution

The correct option is B $N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}$
The thermal stability of the alkali metal bicarbonates increases in the order $N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}$ .
With increase in the size of the cation, the lattice enthalpy increases and the thermal stability increases.

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Similar questions

C s_{2} O < R b_{2} O < K_{2} O < N a_{2} O < L i_{2} O

N a_{2} O_{2} < K_{2} O_{2} < R b_{2} O_{2} < C s_{2} O_{2}

L i H C O_{3} < N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

N a F < N a C l < N a B r < N a l

C s_{2} O < R b_{2} O < K_{2} O < N a_{2} O < L i_{2} O

N a_{2} O_{2} < K_{2} O_{2} < R b_{2} O_{2} < C s_{2} O_{2}

L i H C O_{3} < N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

N a F < N a C l < N a B r < N a I

C s_{2} O < R b_{2} O < K_{2} O < N a_{2} O < L i_{2} O

N a_{2} C O_{3} < K_{2} C O_{3} < R b_{2} C O_{3} < C s_{2} C O_{3}

L i H C O_{3} < N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

N a F < N a C l < N a B r < N a I

\to C s_{2} O < R b_{2} O < K_{2} O < N a_{2} O < L i_{2} O

\to N a_{2} O_{2} < K_{2} O_{2} < R b_{2} O_{2} < C s_{2} O_{2}

\to L i H C O_{3} < N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

\to N a F < N a C l < N a B r < N a I

N a H C O_{3}, K H C O_{3}, M g (H C O_{3})_{2}, C a (H C O_{3})_{2}

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