DP Chemistry Questionbank
A.10 Environmental impact—heavy metals (HL only)
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[N/A]Directly related questions
- 18M.3.hl.TZ2.4b.ii: Vanadium(IV) ions can create free radicals by a Fenton reaction. Deduce the equation for the...
- 18M.3.hl.TZ2.4b.i: Vanadium and other transition metals can interfere with cell metabolism. State and explain one...
- 18M.3.hl.TZ1.5e: The concentration of aluminium in drinking water can be reduced by precipitating aluminium...
- 17N.3.hl.TZ0.9b: The solubility product, Ksp , of cadmium sulfide, CdS, is 8.0 × 10–27. Determine the...
- 17N.3.hl.TZ0.9a: State the name of one method, other than precipitation, of removing heavy metal ions from...
- 17M.3.hl.TZ2.5b.iii: Nickel(II) ions are least soluble at pH 10.5. Calculate the molar solubility of nickel(II)...
- 17M.3.hl.TZ2.4b: Explain why EDTA, a chelating agent, is more effective in removing heavy metal ions from solution...
- 17M.3.hl.TZ2.4a: Identify the other product formed.
- 17M.3.hl.TZ1.10c: Identify a ligand that could be used to chelate antimony(III) ions in solution.
- 17M.3.hl.TZ1.10b: Hydrogen sulfide could be used to remove antimony(III) ions from a solution. Determine the...
- 16N.3.hl.TZ0.10b: Adsorption and chelation are two methods of removing heavy metal ion pollution from the...
- 16N.3.hl.TZ0.10a: Compare and contrast the Fenton and Haber–Weiss reaction mechanisms.
- 16M.3.hl.TZ0.8b: Zinc ions, toxic to aquatic life, may be removed by adding a solution containing hydroxide ions....
- 16M.3.hl.TZ0.8a: The presence of iron(III) ions can catalyse the formation of hydroxyl radicals from O2− and H2O2...
- 15M.3.hl.TZ1.17b.ii: Deduce the expression for the solubility product constant, \({K_{{\text{sp}}}}\), of calcium...
- 15M.3.hl.TZ1.17b.iii: The solubility product of calcium phosphate is...
- 14M.3.hl.TZ1.17a: State an expression for the solubility product constant, \({K_{{\text{sp}}}}\), for copper(II)...
- 14M.3.hl.TZ1.17b: The solubility product of copper(II) hydroxide is \(4.8 \times {10^{ - 20}}\) at a given...
- 14M.3.hl.TZ2.19a: State an ionic equation, including state symbols, for the reaction taking place when an aqueous...
- 14M.3.hl.TZ2.19b: The solubility product, \({K_{{\text{sp}}}}\), of lead(II) chloride is \(1.7 \times {10^{ - 5}}\)...
- 13N.3.hl.TZ0.20b.i: Determine the concentration of the magnesium and hydroxide ions in a saturated solution of...
- 13N.3.hl.TZ0.20b.ii: Deduce, with a reason, whether the pH of a saturated solution of aluminium hydroxide, at the same...
- 13M.3.hl.TZ1.E4a: State the expression for the solubility product constant, \({K_{{\text{sp}}}}\), of lead sulfate.
- 13M.3.hl.TZ1.E4c: Some magnesium sulfate is added to the water sample. Determine the increase in sulfate ion...
- 13M.3.hl.TZ1.E4b: Deduce why lead sulfate will not precipitate out of the water sample at these concentrations.
- 13M.3.hl.TZ2.E4b.i: The solubility product constant, \({K_{{\text{sp}}}}\), of cadmium(II) sulfide, CdS, is...
- 13M.3.hl.TZ2.E4b.ii: Explain how the addition of hydrogen sulfide gas can decrease the concentration of cadmium(II)...
- 13M.3.sl.TZ2.E4a: State an ionic equation, including the state symbols, to show how hydrogen sulfide gas,...
- 09N.3.hl.TZ0.F2d: \({{\text{(EDTA)}}^{4 - }}\), the ethylenediaminetetraacetate anion, is a chelate ligand with the...
- 09N.3.hl.TZ0.E5a: Calculate the concentration of \({\text{P}}{{\text{b}}^{2 + }}\) ions in a saturated solution of...
- 09N.3.hl.TZ0.E5b: Explain how the addition of hydrogen sulfide decreases the concentration of...
- 10M.3.hl.TZ1.E3d: Heavy metal ions can be removed by adding hydroxide ions. When hydroxide ions are added to a...
- 09M.3.hl.TZ1.E3a: Assuming chromium is present as \({\text{C}}{{\text{r}}^{3 + }}\), state an equation for its...
- 09M.3.hl.TZ1.E3b: State an expression for the solubility product constant, \({K_{{\text{sp}}}}\), for chromium(III)...
- 09M.3.hl.TZ1.E3c: The solubility product of chromium(III) hydroxide is...
- 11M.3.sl.TZ1.C3c: State one negative impact that the production of iron and steel has on the environment.
- 11M.3.hl.TZ2.E3a: Industrial effluent is found to be highly contaminated with silver and lead ions. A sample of...
- 11N.3.hl.TZ0.E3a: Raw sewage is the water-carried waste that flows away from a community. If it is discharged...
