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Washing Soda

Two moles of ...

Question

Two moles of sodium bicarbonate on heating gives _________ mole of $C O_{2}$ and ________ moles of water vapor.

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Solution

The chemical formula of sodium bicarbonate (washing soda) is $N a H C O_{3}$ .
When it is heated it undergoes thermal decomposition reaction. This takes place above $500^{0} C$ .
The reaction of decomposition is $2 N a H C O_{3} (s) \to N a_{2} C O_{3} (s) + C O_{2} (g) + H_{2} O (g)$
Ans: 1,1

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Similar questions

Q. Two moles of sodium bicarbonate on heating gives ............... mole of

C O_{2}

and ........... moles of water.

Q. Sodium bicarbonate on heating decomposes to form sodium carbonate,

{C O}_{2}

0.2

moles of sodium bicarbonate is completely decomposed, how many moles of sodium carbonate is formed?

Q. Sodium bicarbonate on heating decomposes to form sodium carbonate,

C O_{2}

0.2

mole of sodium bicarbonate is completely decomposed, how many moles of sodium carbonate is formed?

Q. Sodium bicarbonate breaks down on heating:

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

(Atomic mass of

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

i) How many moles of sodium bi carbonate are there in the equation?
ii) What is the mass of sodium bicarbonate used in this equation?
iii) How many moles of carbon dioxide are there in this equation?

1

N a_{2} C O_{3}

2

N a H C O_{3}

1

C O_{2}

on heating. Thus, percent yleld of

C O_{2}

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