HW question 6D.11 (d) asks whether the solution of KBr has a pH greater than, equal to, or less than 7. Why is the aqueous solution of KBr equal to 7? How would I write a chemical equation to show this?
I think it is because Br- is a conjugate base of HBr which is a strong acid therefore Br- is a weak base and weak bases do not affect the pH and K+ is a conjugate acid of strong base KOH so it will also not affect the pH
K+ is in group 1 element which is neutral and we can also know this since the K+ is a conjugate acid of a strong base, KOH and Br- is conjugate base of strong acid, HBr, so we know that it is also neutral.