The table gives the formulae of the catalysts used in some industrial processes. process | catalyst Haber process | Fe + Mo Contact process | V₂O₅ cracking of alkanes | Al₂O₃ + SiO₂ polymerisation of ethene | Al(C₂H₅)₃ + TiCl₄ manufacture of silicones | CuCl How many different transition metals are included, as elements or as compounds, in the list of catalysts?

What happens when zinc foil is placed in an aqueous solution of copper(II) sulfate?

In the apparatus shown, gas P is passed over solid Q. No reaction occurs if P and Q are

Aluminium is higher than copper in the reactivity series so the following displacement reaction should be feasible. 2…

A solution of fertiliser was tested as shown. Which ions must be present in the fertiliser?

Carbon and silicon are both in Group IV of the Periodic Table. Which statement is correct for both carbon dioxide and…

Which calcium compound does not increase the pH of acidic soils?