Question

Solution A has a pH of 3. Solution B has a pH of 6.

Which solution is more acidic?

By how many times?

What is the conjugate acid of HCO3−? What is the conjugate base of it?

Answer 1

Answer:

More acidic solution A, because if the pH is less than 7, the solution is acidic, and if more than 7, the solution is alkaline.

The lower the pH, the more acidic the solution.

A  conjugate acid is a substance that is formed when a base receives a proton, or H⁺.

So, in order to determine the conjugate acid for a given base, all you have to know is that

base + H⁺→conjugate acid of that base

$HCO_3^- +H^+\to H_2CO_3;$