A colourless and odourless gas is liberated when hydrochloric acid is added to a solution of washing soda. The name of the gas is:
(1) Carbon dioxide (3) Sulphur dioxide (2) Nitrogen dioxide (4) Sulphur trioxide
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2HCl + Na2Co3 === 2 NaCl +H2O + Co2( carbon dioxide) so , correct option is B: carbon dioxide. Hence, the correct answer is (b) carbon dioxide. This discussion on A colourless and odourless gas is liberated when hydrochloric acid is added to a solution of washing soda.
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