It's diprotic acid so [h+]=2x Concentration of acid
So ,why it is not the answer can you please elaborate.
Sorry I understand the question
I have misread the question
According to pH meter it says H+ concentration is equal to label which is not the case for b
So why a strong monoprotic base is given As answer.
What are the given answers
I don't see how c and d can be answers either
Only A imo
I have the same doubt