how how to check that CO2 is released in HCL + NA2CO3
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Pass the evolved gas through Lime water, if it turns milky, it proves that CO2 is evolved.
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Bring a burning flame near the mixture, it will put off fire
Or pass the obtained gas through through CaCO3 solution it will turn milky
Or pass the obtained gas through through CaCO3 solution it will turn milky
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