Question

what is the above reaction called? What is the common name for the new substance
formed in this reaction? What can be the nature of this new
substance? ​

Answer 1

acidic reaction neutral substance salt and water

Answer 2

Answer:

In the question there is mainly no name of reaction but there is a process by which we check the nature of a substance whether it is acidic or basic........

Actually, The neutral colour of Phenolphthalein is colourless (कोई रंग नहीं)....And when Acidic or basic substance is put then it changes its colour as:-

Pink colour -------> Basic substance

No colour change---> Acidic substance

Therefore , New substance is acid and is corrosive in nature.......