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A student uses a calibrated pH meter to measure an aqueous ethanoic acid solution. Figure 1 shows the meter reading.
State the pH of the solution shown in Figure 1.
Calculate the hydrogen ion concentration, [H⁺], in the solution. Give your answer in mol dm⁻³ to two significant figures.
At room temperature, of magnesium ribbon is added to excess dilute hydrochloric acid. Figure 1 shows the measured volume of gas collected over time.
Use Figure 1 to state the volume of gas collected after
Write a balanced equation, including state symbols, for the reaction of magnesium with dilute hydrochloric acid.
In a voltaic cell, electrode A undergoes the reaction
Identify electrode A as the anode or cathode and state its sign.
In an electrolytic cell, electrode B undergoes the reaction
Identify electrode B as the anode or cathode and state its sign.
Ethane reacts with bromine under ultraviolet light. Bromoethane is one product, and the reaction proceeds by a radical chain mechanism.
Write the two propagation equations for the reaction of ethane with bromine.
Write a termination equation involving two ethyl radicals.
State one reason why a mixture of organic products can form.
State two features of alkanes that contribute to their low reactivity.
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