Gravimetric Methods of Analysis · CAPE Chemistry Unit 2
20 past-paper questions on Gravimetric Methods of Analysis, part of Analytical Methods and Separation Techniques, from every CAPE Chemistry Unit 2 paper on Quelpr.
- Q191 mark · multiple choice· CAPE Chemistry Unit 2 · 2012 · Paper 1A
300\text{ mg}solid sample containing chloride is dissolved in water. The chloride is then precipitated as\text{AgCl}by the addition of silver nitrate to the solution of the sample. The precipitate is collected,… - Q201 mark · multiple choice· CAPE Chemistry Unit 2 · 2012 · Paper 1Which of the following statements about gravimetric analysis is NOT true?
- Q181 mark · multiple choice· CAPE Chemistry Unit 2 · 2014 · Paper 1In gravimetric analysis of a substance by precipitation, which of the following outcomes would be FALSE for the precipitate formed?
- Q191 mark · multiple choice· CAPE Chemistry Unit 2 · 2014 · Paper 1A
300\text{-mg}solid sample containing chloride is dissolved in water. The chloride is then precipitated as\text{AgCl}by the addition of silver nitrate to the solution of the sample. The precipitate is collected,… - 2(c)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2State ONE example of the use of gravimetric analysis in quality control.
- 2(d)(i)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2State the purpose for performing Step 1 and Step 4.
- 2(d)(ii)2 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2State TWO pieces of apparatus that should be used in Step 2.
- 2(d)(iii)1 mark· CAPE Chemistry Unit 2 · 2014 · Paper 2State the apparatus that should be used in Step 3.
- 2(e)4 marks· CAPE Chemistry Unit 2 · 2014 · Paper 2Calculate the value of x in the formula Na2SO4.xH2O.
- Q191 mark · multiple choice· CAPE Chemistry Unit 2 · 2015 · Paper 1Items 19-20 refer to the following information.
A student carries out the gravimetric analysis of a soil sample taken from an area surrounding a garage. The soil sample is found to be contaminated with
\text{Pb}^{2+}… - Q201 mark · multiple choice· CAPE Chemistry Unit 2 · 2015 · Paper 1What is the concentration of
\text{Pb}^{2+}in the original solution? - Q191 mark · multiple choice· CAPE Chemistry Unit 2 · 2017 · Paper 1Treatment of a
10.00\text{ g}sample containing a chloride salt with excess silver nitrate solution produced8.08\text{ g}of silver chloride.(\text{Ag} = 108, \text{Cl} = 35.5)Which of the following… - 2(c)(ii)2 marks· CAPE Chemistry Unit 2 · 2017 · Paper 2From Figure 1, list the letters of TWO pieces of apparatus that could be used in gravimetric analysis.
- 2(d)(i)1 mark· CAPE Chemistry Unit 2 · 2017 · Paper 2Write the equation for the formation of the dry calcium oxalate precipitate.
- 2(d)(ii)4 marks· CAPE Chemistry Unit 2 · 2017 · Paper 2Calculate the percentage of Ca2+ in the sample.
- 2(b)4 marks· Chemistry · Unit 2 Q2 2(b)Use the information above to determine the chemical formula of the hydrate of CuSO4, that is, the x in CuSO4•xH2O.
- 2(c)(i)2 marks· Chemistry · Unit 2 Q2 2(c)(i)Write the equation for the reaction between the sulfate of a Group 1 element (M) and barium chloride.
- 2(c)(ii)5 marks· Chemistry · Unit 2 Q2 2(c)(ii)calculate the mass of sulfate in the Group 1 sulfate. determine the % weight of sulfate in the Group 1 sulfate.
- 2(d)4 marks· Chemistry · Unit 2 Q2 2(d)Give TWO examples in which gravimetric analysis (by precipitation) can be employed in quality control. Indicate the product(s) obtained as the precipitate.
- 2(e)4 marks· Chemistry · Unit 2 Q2 2(e)When 0.612 g of hydrated barium chloride is heated to constant mass, 0.522 g of residue is formed. Deduce the formula of hydrated barium chloride.