v) Which of the following represents a redox reaction ) 2HCI + Na,SO3 -> 2NaCl + H20 + SO2 ) CuS + H2 -> H2S + Cu ) A9NO3 + NaCl -> AgCl + NaNO3 ) H2CO3 -> H20 + CO2 ) CH;Br + CN -> CH;CN + Br

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For the reaction 3 KCIO, – KCI + 0, assign oxidation numbers to each element on each side of the equation. K in KCIO;: K in KCI: Cl in KCIO,: Cl in KCI: O in KCIO,: O in 0,: Which element is oxidized? Which element is reduced? CI K K CI

2 OH- + AO3-+2BO2 -> A- +2 BO4-+H2O Fine the oxidized, reduced, species and agents. A is a halogen and B is a Metal

When the following equation is balanced properly under basic conditions, what are the coefficients of the species shown? |520,²- + 1 so,2- I, 2 I +1 Water appears in the balanced equation as a product (reactant, product, neither) with a coefficient of 3 (Enter O for neither.) How many electrons are transferred in this reaction?4