Equimolar quantities of magnesium carbonate and strontium carbonate are separately heated to bring about complete thermal decomposition. The minimum temperature for this to occur is called T_d. The cold residues are separately added to equal volumes of water and the change in pH is measured. The change in pH is called ∆pH. Which metal has the higher value of T_d, and the greater value of ∆pH?

Metal T reacts with water to produce a colourless solution. A white precipitate is produced when this colourless solu…

The following table lists the solubilities of the hydroxides and carbonates of some of the Group 2 elements, M, at 25…

Compound Z is insoluble in water but soluble at low pH. What could be compound Z?

An excess of chlorine was bubbled into 100 cm³ of hot 6.0 mol dm⁻³ sodium hydroxide. How many moles of sodium chlorid…

The product of the Contact process is Z. Which reaction or process leads to the formation of a gas that can neutralis…

In this question, alkenes and cyclic alkanes should be considered. How many structural isomers of C₄H₈ are there?