Three substances A, B and C melt at 0°C, 50°C and -150°C, respectively and their boiling points are 100°C, 200°C, and 10°C. State physical nature of A, B and C at

room temperature​

Where is the illustration?

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.