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Chemistry 9 Online
OpenStudy (dreamyunicorn):

A washing powder contains sodium hydrogencarbonate, NaHCO3, as one of the ingredients. In a titration, a solution containing 1.00 g of washing powder requires 7.15 cm3 of 0.100 mol dm–3 sulfuric acid for complete reaction. The sodium hydrogencarbonate is the only ingredient that reacts with the acid. What is the percentage by mass of sodium hydrogencarbonate in the washing powder?

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