In the chemical equation 2 co(no3)3 + 3 (nh4)2s → co2s3 + 6 nh4no3 , how many nitrogen atoms are on each side of the equation?

6

Explanation:

On the left hand side, we have three nitrogen atoms within the polyatomic ion. You then multiply that by the stoichiometric coefficient (the numbers to the left of a a formula that are used to balance the equation). So it is 2*3=6.

On the right, there are two nitrogen atoms within the formula then multiplied by the stoichiometric coefficient again. 2*3=6

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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.