Quelpr
2 marksIdentification of Cations and Anions

CAPE Chemistry Unit 1 · 2017 · Question 1(b)

To a small sample of R, add dilute HCl and warm.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)Heat strongly a small quantity of R and allow to cool. Test for gas evolved. Observe residue.[3 marks]
  2. 1(c)To another small sample of R, add concentrated H₂SO₄ and heat carefully.[2 marks]
  3. 1(d)(i)Dissolve a spatula-full of R in minimum volume of dilute hydrochloric acid (warming if needed). Dilute with water to half of a test tube. Divide the solution…[3 marks]
  4. 1(d)(ii)To the second sample of the solution add AgNO₃(aq).[1 mark]
  5. 1(e)Write the chemical formula for the other product formed with water when excess NaOH(aq) is added in (d) (i).[1 mark]

More practice: the rest of this paper · more Identification of Cations and Anions questions · all CAPE Chemistry Unit 1 past papers