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Between sodium hydrogencarbonate and mag...

Between sodium hydrogencarbonate and magnesium hydroxide which is a better antacid and why?

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Magnesium hydroxide is a better antacid because being insoluble it does not allow the pH to increase above 7(neutrality). In contrast, sodium hydrogen carbonate being soluble, excess of it can make the stomach alkaline and trigger the generation of even more acid.
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This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement -1 : Na2SO_4 can be used as the starting material for the preparation of sodium carbonate and sodium hydroxide Statement - II: Sodium hydroxide is prepared by the treatment of milk of lime with sodium carbonate.

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