2. Citric acid is the predominant acid in lemon juice.
(a) Citric acid (C6H8O7) is a weak acid. Explain what is meant by the term “weak acid”.
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3. For each of the chemical species listed in the table below, write the sub-shell electron configuration and then use your sub-shell electron configuration to derive the simple electron configuration.
4. Iron(III) oxide, Fe2O3, reacts with carbon monoxide gas, producing iron metal and carbon dioxide gas, according to the following equation.