Chemistry · May / June 2019 · Paper 11 · Question 11
5070The mole and the Avogadro constant
In a volumetric experiment, 25.0 cm3 of 0.100 mol / dm3 sodium hydroxide reacts exactly with 20.0 cm3 of sulfuric acid. 2NaOH + H2SO4 → Na2SO4 + 2H2O What is the concentration of the sulfuric acid?
- A0.0625 mol / dm3
- B0.0800 mol / dm3
- C0.125 mol / dm3
- D0.250 mol / dm3
As printed in the paper
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Correct answer: A. 0.0625 mol / dm3
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