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Washing Soda

NaHCO3 can be...

Question

$N a H C O_{3}$ can be used on its own to make cakes or bread. Baking powder is more commonly used, and contains $N a H C O_{3}$ , $C a (H_{2} P O_{4})_{2}$ and starch. An improved combination baking powder contains about 40% starch, 30% $N a H C O_{3}$ 20% $N a A l (S O_{4})_{2}$ and 10% $C a (H_{2} P O_{4})_{2} .$
Answer the following questions based on above study.

$C a (H_{2} P O_{4})_{2}$ in baking powder:

behaves as an acid in moist condition and decomposes

N a H C O_{3}

to give

C O_{2}

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behaves as a base in moist condition and gives

H_{3} P O_{4}

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behaves as a binder

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behaves as a filler

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Solution

The correct option is A behaves as an acid in moist condition and decomposes $N a H C O_{3}$ to give $C O_{2}$
Reaction of process:
$14 N a H C O_{3} + 5 C a (H_{2} P O_{4}) 2 H_{2} O \to 14 C O_{2} + C a_{5} (P O_{4}) 3 O H + 7 N a_{2} H P O_{4} + 18 H_{2} O$

in baking powder behaves as an acid in moist condition and decomposes $N a H C O_{3}$ to give $C O_{2}$

Suggest Corrections

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N a H C O_{3}

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C a (H_{2} P O_{4})_{2}

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