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How would you distinguish between baking powder and washing soda by heating?

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asked Jan 15, 2018 in Chemistry by jisu zahaan (28,760 points) ● 28 ● 436 ● 1080
How would you distinguish between baking powder and washing soda by heating?

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answered Jan 15, 2018 by faiz (82,347 points) ● 6 ● 6 ● 12
selected Jan 25, 2018 by Vikash Kumar
 
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The chemical formula of baking powder is sodium hydrogencarbonate (NaHCO2); whereas, that of washing soda is sodium carbonate (Na2CO3 10H2O). Sodium hydrogencarbonate on heating gives CO2 gas which will turn lime water milky whereas no such gas is obtained from sodium carbonate.

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