Question

How does the value of mc019-1.jpg and mc019-2.jpg compare with the concentrations of hydronium ion and hydroxide ion?
mc019-3.jpg
mc019-4.jpg
mc019-5.jpg
mc019-6.jpg

Answer 1

I can’t see the mc019-*.jpg files you mention. Could you either attach them here or type the expressions shown in each image?

Meanwhile, here are the general relationships you can use to compare hydronium and hydroxide concentrations:

- At 25 °C, Kw = [H3O+][OH−] = 1.0 × 10^−14.
- If you know pH: [H3O+] = 10^(−pH). Then pOH = 14 − pH and [OH−] = 10^(−pOH) = 10^(−(14−pH)).
- If you know one concentration, the other follows from Kw: [OH−] = Kw / [H3O+] and [H3O+] = Kw / [OH−].
- Comparison rule: if [H3O+] > [OH−] the solution is acidic (pH < 7); if [H3O+] < [OH−] it is basic (pH > 7); if equal it is neutral (pH = 7).

Examples:
- pH 3 → [H3O+] = 1.0×10^−3 M; [OH−] = 1.0×10^−11 M (Kw/[H3O+]).
- pH 7 → [H3O+] = 1.0×10^−7 M; [OH−] = 1.0×10^−7 M.
- pH 11 → [H3O+] = 1.0×10^−11 M; [OH−] = 1.0×10^−3 M.

Send the images or their text and I’ll give the specific comparison you need.