(a)(i) What is meant by the activation energy of a reaction? (ii) State the effect of a catalyst on activation energy. (b) What substance serves as a cataly...

(a)(i) Arrange the following elements in the order of increasing reactivity. Iron, Lead, Magnessium, Aluminium. (ii) Which of the following elements in (a)(i...

(a) State two postulates of the kinetic theory of gases. (b) Write two chemical properties that are common to both carbon (IV) oxide and sulphur (IV) oxide.

(a) List two uses of sodium trioxocarbonate (IV). (b) Sodium trioxocarbonate (IV) solution is alkaline. (i) What phenomenon is responsible for this observati...

(a)(i) What is the general formula for alkanoic acids? (ii) State two chemical properties of ethanoic acid. (b) Which of propene, butane and pentane (i) will...

Xg of a pure sample of iron (II) sulphide reacted completely with excess dilute hydrochloric acid to give 3.20g of iron (II) chloride according to the follow...

(a) What is the IUPAC name of Fe\(_2\)(SO\(_4\))\(_3\)? (b)(i) Write an equation to represent the reaction of hydrogen sulphide with iron (III) chloride solu...

Copy and complete the following table Element Number of Neutrons Electronic Configuration Group in the periodic Table \(^{23}_{11}Na\) --- \(1s^{2}2s^{2}2p^{...

(a) Write an equation for the reaction of chlorine with (i) potassium iodide solution; (ii) zinc on heating (b) Identify the product Q in the following react...