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chemistry igcse acapprinted 33 · PDF 33
145 pagesrevision 46934
printed 33 · PDF 33
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Cu → Cu2+ + 2e–
Cu2+ + 2e– → Cu
P4:
Q1. Write the ionic equation which represents a neutralization reaction between any acid and any
alkali.
Q2. Name the process that is used to obtain water from aqueous sodium chloride.
Q3. State what is meant by the term electrolysis.
Q4. Dilute aqueous sodium fluoride undergoes electrolysis. Hydrogen is produced at the cathode.
Write an ionic half-equation for the production of hydrogen at the cathode.
Q5. Name the process used to produce lead from molten lead(II) bromide.