1) When iron (Fe) reacts with chlorine (Cl2), iron chloride (FeCl2) forms. How much chlorine is required to produce 6.0 moles of iron chloride? 2) The exhaust system of a motor car is fitted with a catalytic converter. When nitrogen monoxide passes through the converter it reacts with carbon monoxide. 2NO(g) + 2CO(g) -> N2(g) + 2CO2(g) During the course of a journey 2.4 dm3 of nitrogen monoxide was produced by the engine. Calculate the volume of nitrogen gas produced if all the nitrogen monoxide reacted in the converter.
3) If you add 5.5 g of sodium carbonate to excess dilute sulfuric acid, what mass of sodium sulfate would be made? H2SO4 + Na2CO3 -> Na2SO4 + CO2 + H2O. RFM of sodium carbonate= 83

answer; i believe that the correct answer is (a) potassium(k)

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

um i think it might be a car?