Quelpr

CSEC Chemistry · May/June 2018 · Paper 2 · Question 4(b)(i)

Describe the effect that EACH of the following substances will have on the bulb, when the substance is placed in the empty container in Figure 3. State a reason for your answer for EACH substance.

Solid sodium chloride

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. 4(a)Define 'electrolysis'.[2 marks]
  2. 4(b)(ii)1 mol dm⁻³ hydrochloric acid[2 marks]
  3. 4(b)(iii)Ethanol[2 marks]
  4. 4(b)(iv)A bar of lead touching the electrodes[2 marks]
  5. 4(c)A sample of molten lead bromide, PbBr₂, is electrolysed for three minutes with a current of 6 amperes. Calculate the mass of lead that is deposited at the…[5 marks]

More practice: the rest of this paper · more Electrochemistry questions · all CSEC Chemistry past papers