1. [a]An aqueous solution has a pH of 4.0. (i) What is the hydrogen ion concentration of the solution?mark (ii) What effect will the solution in [ai] above have on a litmus paper? [b](i) Which of the following salt solutions below would have the same effect on litmus paper as in [ai]? Give a reason for your answer. NH4Cl (aq); NaCl(aq); CH3OONa(aq)marks (ii) Define a Buffer Solution (iii) Give two examples acid anhydrides 2. [A](i) State one physical property of a base (ii) Define the following terms: (i) a salt (ii) an acid [B] (i)Write an equation for the reaction between Zinc and dilute tetraoxosulphate(vi) aci[D] (ii) Give one example of a gyroscopic substance
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