Lessons

Eamcet Chemistry
1st Year : Unit 1.4 (Basics & Concepts) - Stoichiometric Calculations

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Q.

The percent weight loss suffered by sodium bicarbonate on strong heating is

View Answer

Correct choice: A

Explanation:

On strong heating sodium bicarbonate decomposes and loses carbondioxide and water.
2NaHCO3 →Na2CO3 + H2O + CO2
2 moles of NaHCO3 →1 mole of CO2 + 1 mole of H2O
(2 × 84) grams of NaHCO3 shows (44 + 18)=62grams weight loss
100 grams of NaHCO3 shows ( 100X62/2x84)= 36.9% weight loss.
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