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Amount of substance

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Question 16

A student titrates a standard solution of sodium carbonate, Na2CO3\text{Na}_2\text{CO}_3Na2​CO3​, with nitric acid, HNO3\text{HNO}_3HNO3​.

25.00 cm3 of 0.0480 mol dm-3 Na2CO3\text{Na}_2\text{CO}_3Na2​CO3​ are needed to neutralise 18.75 cm3 of HNO3(aq)\text{HNO}_3\text{(aq)}HNO3​(aq).

What is the concentration, in mol dm−3\text{mol dm}^{-3}mol dm−3, of the nitric acid?

0.03200.03200.0320

0.06400.06400.0640

0.07200.07200.0720

0.1280.1280.128

Amount of substance Questions

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