What is the observation & inference when
(a)Solid N a subscript 2 C O subscript 3 is added to acetic acid solution & heated slightly.
(b)colour , smell of the gas given out in (a).
(c)passed gas & excess of gass through lime water.

Asked by araima2001 | 24th Oct, 2015, 08:58: PM

Expert Answer:

Dear araima2001@yahoo.com

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Solution for first query,
a)Na2CO3 + CH3COOH → CH3COONa + CO2 + H2O
b)Liberated gas has no colour and smell.
c)On passing the gas through lime water, it turns milky due to precipitation of CaCO3.
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
When excess of CO2 is passed through lime water, it forms soluble calcium bicarbonaate, hence the lime water again tuns colourless.
CaCO3(s) + H2O(l) + CO2(g)  Ca(HCO3)2(aq)

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Topperlearning Team.

Answered by Prachi Sawant | 25th Oct, 2015, 02:32: PM

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