CAPE Chemistry Unit 2 · 2015 · Paper 2 · Question 2(b)
List TWO requirements which a primary standard reagent that is to be used in a titrimetric analysis must satisfy.
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- 2(a)(i)In a titrimetric analysis, state ONE operation which can affect accuracy.[1 mark]
- 2(a)(ii)In a titrimetric analysis, state ONE operation which can affect precision.[1 mark]
- 2(c)(i)Using the results in Table 1, plot a graph of temperature against volume of acid on the axes provided on page 7.[4 marks]
- 2(c)(ii)Hence, determine the end-point volume of the acid.[1 mark]
- 2(c)(iii)Calculate the concentration of the acid.[2 marks]
- 2(d)Outline the experimental steps for this type of thermometric titration.[4 marks]
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