Chemistry in uni

Question

Hey!

Which one of these salts will have the highest pH (they have same concentration)

1. NaNO₂
2. KCl
3. NaClO₄
4. NaBr

Answer 1

1. NaNO₂ This is the salt of a strong base (NaOH) and a weak acid (HNO₃). It will have an alkaline pH
2. KCl This is the salt of a strong base (KOH) and a strong acid (HCl). It will have a neutral pH
3. NaClO₄ This is the salt of a strong base (NaOH) and a strong acid HClO₄. It will be neutral
4. NaBr This is the salt of a strong base (NaOH) and a strong acid (HBr). It will be neutral

So the answer would be that NaNO₂ will have the highest pH