Give half-equations, including state symbols, for the reactions taking place at each electrode in a diaphragm cell. Anode and cathode.
In the diaphragm cell, the anode is made of titanium and the cathode is made of steel. Suggest why steel is unsuitable for use as the anode.
Describe what you would see when chlorine is passed over separate heated samples of sodium and phosphorus. For each case, write an equation for the reaction.
Chlorine reacts with aqueous sodium hydroxide in two different ways, depending on the conditions used. In each case, water, sodium chloride and one other chlorine-containing compound are made. For each condition below, give the formula of the other chlorine-containing compound and state the oxidation number of chlorine in it. cold dilute $\text{NaOH(aq)}$ hot concentrated $\text{NaOH(aq)}$
Magnesium chloride, $\text{MgCl}_2$, and silicon tetrachloride, $\text{SiCl}_4$, each dissolve in or react with water. Suggest the approximate pH of the solution formed in each case. $\text{MgCl}_2$ $\text{SiCl}_4$ Explain, with the aid of an equation, why the two values differ.