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Atoms and reactions

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Question 26

0.93 g of methylamine gas, CH3NH2\text{CH}_3\text{NH}_2CH3​NH2​ (Mr=31.0M_{\text{r}} = 31.0Mr​=31.0), is reacted with 50 cm3 of 1.0 mol dm-3 hydrochloric acid forming a solution of methylammonium chloride.

CH3NH2(g)+HCl(aq)→CH3NH3+(aq)+Cl−(aq) \text{CH}_3\text{NH}_2\text{(g)} + \text{HCl(aq)} \rightarrow \text{CH}_3\text{NH}_3^+\text{(aq)} + \text{Cl}^-\text{(aq)} CH3​NH2​(g)+HCl(aq)→CH3​NH3+​(aq)+Cl−(aq)

What is the concentration of methylammonium chloride in mol dm−3\text{mol dm}^{-3}mol dm−3?

A

0.03

B

0.97

C

0.60

D

1.00

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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