Which compound(s) can protonate nh3? a : ch3co2h (pka = 4.75) b : ch3ch3 (pka = 50) c : nh3 (pka = 38)

Protonation means addition of proton to a compound. Protonation of NH₃ can take place if any acidic compound releases proton (H⁺ ion) easily. The acid which can be dissociated easily can donate proton to other compound. Whether the removal of proton is possible or not can be understood from its dissociation constant value (Kₐ). If Kₐ value is more dissociation of the compound is easy means H⁺ ion can be removed easily. Also, if Kₐ value is inversely related to value. If value is less, then kₐ value is more which indicates dissociation is also more, donation of proton is also easy. As per given information, value of CH₃COOH is less as compared to CH₃CH₃ and NH₃. So, CH₃COOH can protonate NH₃.

it is called acid bonding

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.