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Amount of substance

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Question 46

Which amount of sodium hydroxide would react exactly with 4.80 g of a triprotic acid, H3X\text{H}_3\text{X}H3​X (Mr=192M_{\text{r}} = 192Mr​=192)?

A

250 cm3250\text{ cm}^3250 cm3 of 0.20 mol dm−3 NaOH(aq)0.20\text{ mol dm}^{-3}\ \text{NaOH(aq)}0.20 mol dm−3 NaOH(aq)

B

100 cm3100\text{ cm}^3100 cm3 of 0.25 mol dm−3 NaOH(aq)0.25\text{ mol dm}^{-3}\ \text{NaOH(aq)}0.25 mol dm−3 NaOH(aq)

C

150 cm3150\text{ cm}^3150 cm3 of 0.50 mol dm−3 NaOH(aq)0.50\text{ mol dm}^{-3}\ \text{NaOH(aq)}0.50 mol dm−3 NaOH(aq)

D

250 cm3250\text{ cm}^3250 cm3 of 0.90 mol dm−3 NaOH(aq)0.90\text{ mol dm}^{-3}\ \text{NaOH(aq)}0.90 mol dm−3 NaOH(aq)

Markscheme

Amount of substance Questions

  1. A Level
  2. /Chemistry
  3. /Amount of substance

79 exam-style questions on AQA A Level Chemistry Amount of substance, covering Relative atomic mass and relative molecular mass, The mole and the Avogadro constant, The ideal gas equation, Empirical and molecular formula, and Balanced equations and associated calculations. Each one has a worked solution and a mark scheme showing where the marks go.

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