Practise comparing Period 3 oxides and chlorides across structure, reactions, oxidation state and acid–base behaviour using CAIE 9701 AS questions.
The elements magnesium and phosphorus are reacted separately with an excess of oxygen to form their oxides. Each oxide is then added separately to water and the pH values of the resulting solutions are measured.
The same two elements are reacted separately with an excess of chlorine to form their chlorides. Each chloride is then added separately to water and the pH values of the resulting solutions are measured.
Which row is correct?
oxide giving
the higher pH
chloride giving
the higher pH
magnesium
magnesium
magnesium
phosphorus
phosphorus
magnesium
phosphorus
phosphorus
A