why is an aqueous solution of sodium carbonate alkaline in nature
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it acts as alkali because when dissolved in water /H2O it dissociatis into the weak acid
(CO3)2- + H2O gives OH- + HCO3-
(CO3)2- + H2O gives OH- + HCO3-
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Sodium carbonate when dissolved in water is hydrolysed to form a weak acid, carbonic acid and a strong base sodium hydroxide. Hence, an aqueous solution of sodium carbonate is alkaline in nature.
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