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Distinguish between Sodium carbonate and sodium nitrate. |
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Answer» Sodium carbonate when treated with dilute hydrochloric acid, a vigorous reaction takes place and a colourless, odourless gas carbon dioxide is evolved which turns lime water milky. Na2CO3 + 2HCl → 2NaCl + H2O + CO2 Sodium nitrate when mixed with copper filings and heated with concentrated sulphuric acid, reddish brown fumes of nitrogen dioxide are evolved. 2NaNO3 + H2SO4 → Na2SO4 + 2HNO3 Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O. |
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