5 68 g of a mixture of CaCO3 and MgCO3 was dissolved in 800 ml of 0 4 M HCI and the solution was diluted to 1 lit 20 ml of this

Question

5 68 g of a mixture of CaCO3 and MgCO3 was dissolved in 800 ml of 0 4 M HCI and the solution was diluted to 1 lit 20 ml of this solution was neutralised by 20 ml of 0 1 M Na CO3 The percentage of MgCO3 in the mixture is approx 1 29 6 2 42 910

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