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How will you distinguish between (i) Na_(2)CO_(3) and NaHCO_(3) and (ii) LiNO_(3) and KNO_(3) ? |
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Answer» Solution :(i) `NaHCO_(3)` on heating DECOMPOSES to produce `CO_(2)` GAS which turns lime water milky `2 NaHCO_(3) overset(Delta)(to) Na_(2)CO_(3) + CO_(2) + H_(2)O` `Na_(2)CO_(3)` , however , is stable to heat . (ii) `LiNO_(3)` on heating gives reddish brown vapours of `NO_(2)` whereas `KNO_(3)` on decomposition gives colourless `O_(2) ` gas . `4 LiNO_(3) overset(Delta)(to) 2Li_(2)O + 4NO_(2) + O_(2) "" , 2 KNO_(3) overset(Delta)(to) 2 KNO_(2) + O_(2)` |
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