One mole of one of the sodium salts listed below, having carbon content close to 14.3% produces 1 mole of carbon dioxide upon heating (atomic mass Na = 23, H = 1, C = 12, O = 16). The salt is:

C_{2} H_{5} C O O N a

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N a H C O_{3}

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H C O O N a

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C H_{3} C O O N a

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Solution

The correct option is B $N a H C O_{3}$
Molar mass of $C_{2} H_{5} C O O N a = 96 g / m o l$
$% C = \frac{36}{96} \times 100 = 37.5 %$

$2 N a H C O_{3} △ - \to N a_{2} C O_{3} + H_{2} O + C O_{2}$
$% C = \frac{12}{84} \times 100 = 14.28 %$

Molar mass of $H C O O N a = 68 g / m o l$
$% C = \frac{12}{68} \times 100 = 17.65 %$

Molar mass of $C H_{3} C O O N a = 82 g / m o l$
$% C = \frac{24}{82} \times 100 = 29.26 %$

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Similar questions

14.3

1

N a = 23, H = 1, C = 12, O = 16)

2 N a H C O_{3} \to N a_{2} C O_{3} + H_{2} O + C O_{2}

N a = 23, C = 12, H = 1, O = 16)

44

C = 12

H = 1

O = 16

5

{N a}_{2} {C O}_{3}

N a = 23

C = 12

O = 16

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