CBSE Class 9 Answered
in a reaction 4.0g of sodium carbonate were reacted with 10g of hydrochloric acid. The product was a mixture of 2.5g of carbon dioxide and 11.5g of sodium chloride.
![question image](http://images.topperlearning.com/topper/new-ate/top_mob15813417521444712518answer2573148348218951916.jpg)
Asked by rjinaaishu007 | 10 Feb, 2020, 19:05: PM
The reaction is:
![sodium space carbonate space space plus space hydrochloric space acid space space space rightwards arrow space space sodium space chloride space plus space space carbon space dioxide space
space space space space space space space space space space space space 4 space straight g space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 10 space straight g space space space space space space space space space space space space space space space space space space space space space 11.5 space straight g space space space space space space space space space space space space space 2.5 space straight g](https://images.topperlearning.com/topper/tinymce/cache/b4dbd86d3b1413499ae8e774dd9bddb5.png)
Mass of reactants = 4+10 = 14 gm
Mass of products = 11.5 + 2.5 = 14 gm
The mass of reactants is equal to the mass of the products. Therefore the given data is in agreement with law of conservation of mass.
Answered by Varsha | 11 Feb, 2020, 11:29: AM
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