Edexcel Gcse Chemistry/additional Science - Unit C2: Discovering Chemistry Page 19
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3019
(ii) In an experiment the mass of water obtained
was 2·0 g.
The theoretical yield for this experiment was
calculated to be 4·0 g.
Calculate the percentage yield. (2 marks)
_________________________________________________________
_________________________________________________________
_________________________________________________________
percentage yield = _______________ %
(iii) Suggest ONE reason why less than 4·0 g of
water was obtained in this experiment. (1 mark)
_________________________________________________________
_________________________________________________________
(Total for Question 4 = 10 marks)
(Questions continue on next page)
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