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Common Salt

The component...

Question

The components of baking powder are:

A

N a_{2} C O_{3}

&

N a H C O_{3}

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B

N a H C O_{3}

N a_{2} S O_{4}

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C

N a H C O_{3}

and potassium hydrogen tartrate

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D

N a_{2} C O_{3}

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Solution

The correct option is D $N a H C O_{3}$ and potassium hydrogen tartrate
Baking powder is a mixture of starch, sodium hydrogen carbonate and potassium hydrogen tartrate.

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Similar questions

Q. Write uses of baking powder

(N a H C O_{3})

Q. What is obtained when

{NaHCO}_{3}

Q. A sample contains a mixture of

N a H C O_{3}

N a_{2} C O_{3}

H C l

15.0

g of the sample yielding

11.0

N a C l

. What percent of the sample is

N a_{2} C O_{3}

?
Reactions are:

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

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

Molecular weight of

N a C l

N a H C O_{3}

N a_{2} C O_{3}

58.5

84

106

g/mol respectively.

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}

N a A l (S O_{4})_{2}

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:

Q. A 2.00 g. of sample containing

N a_{2} C O_{3}

N a H C O_{3}

loses 0.248 g when heated to

300^{o} C

, the temperature at which

N a H C O_{3}

decomposes .Find % composition of

N a_{2} C O_{3}

in the mixture ?

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