Question 2 a Write the conjugate acid of each of the following bases (1) (iii) NO2 H2PO4 он" Aso, 2- (iv) (v) (5) (Turn

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Question 2 a Write the conjugate acid of each of the following bases (1) (iii) NO2 H2PO4 он" Aso, 2- (iv) (v) (5) (Turn over] 3 INC2510 Oct/Nov 2019 b. Using the half reaction method, balance the following redox reaction occurring in acidic medium HNO2 + Mnoi Mn2+ + NO: (6) In the reaction; 4Ag(s) + 8CN"(aq) + O2(g) + 2H2010 4[Ag(CN):1(aq) + 40H"(aq) (i) Explain why oxygen must be present to carry out the reaction. d. Suggest why copper(1) chloride is insoluble in water. (4) (2) e. What evidence do you have that titanium(IV) chloride is a covalent compound? (3) [201