For a system where:

NH2OH + CH3NH3+ --> CH3NH2 + NH3OH+
95% 95% 5% 5%

State of equilibrium in the system is described by the percentages given above.Which of the species above is the strongest acid in the system?
My answer is CH3NH3+, is it correct?

No, I did the same online quiz and CH3NH3+ is not correct. Weakest aicd will be least reactive, that means it will have larger concentration,

in this CH3NH3+ and NH3OH+ are functioning as acids, CH3NH3+ is 95%.
so the strongest acid should be NH3OH+

No, your answer is not correct. In the given equilibrium reaction, NH2OH acts as an acid by donating a proton (H+) to CH3NH3+. Therefore, NH2OH is the strongest acid in the system.

Yes, your answer is correct. CH3NH3+ (methylammonium ion) is the strongest acid in the system.

To determine the strength of an acid, we look at its ability to donate a proton (H+). In this case, CH3NH3+ can donate a proton to NH2OH.

The equilibrium system suggests that NH2OH and CH3NH3+ are present in approximately equal amounts at equilibrium, indicating that they have similar acidity. However, since the question states that NH2OH is less acid than CH3NH3+, we can conclude that CH3NH3+ is the stronger acid of the two.

yes