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WAEC Chemistry 2021 Paper

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Question : 31

Total: 50

Student X titrated 25cm3 of Na2CO2 with 0.1‌mol‌dm‌‌−3‌HCl, using methyl orange as indicator. Student Y carried out the same exercise but used phenolphthalein as indicator. Which of the following statements about the titration is true?

hydrogen chloride gas was released in the reactions in both titrations
the titer values obtained from the titration are equal
the tirer value obtained by X is twice that of Y
the titer value obtained by Y is twice that of X

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