Complete Table 2.1 to show the maximum oxidation number of the elements Na to P in their chlorides.
State what factor determines the maximum oxidation number of elements in Period 3.
Write an equation for the reaction between an excess of cold water and the chloride of silicon.
Suggest the pH of the solution formed in (b)(i).
Write an equation for the reaction between an excess of cold water and the chloride of phosphorus.
Suggest the pH of the solution formed in (c)(i).
Write an equation for the reaction of chlorine with water.
Write an equation for the reaction of chlorine with hot $\text{NaOH(aq)}$.
Identify the formula of the ion in bleach that kills bacteria.
Sodium chlorate(I), $\text{NaClO}$, reacts with hydrogen peroxide to form sodium chloride, water and oxygen gas. Write an equation for this reaction.
A sample of bleach $W$ has an unknown concentration of sodium chlorate(I). $10.0\,\text{cm}^3$ of $W$ is diluted with distilled water until the total volume is $100\,\text{cm}^3$ of bleach solution. Then $25.0\,\text{cm}^3$ of this diluted bleach solution is mixed with an excess of hydrogen peroxide and the gas volume produced is measured at room conditions. The experiment is repeated and, on average, $25.0\,\text{cm}^3$ of diluted bleach solution gives $42.0\,\text{cm}^3$ of gas. Calculate the concentration, in $\text{g dm}^{-3}$, of sodium chlorate(I) in $W$.