Mode · keys 1–4
pH
Buffers
Salt hydrolysis
Ksp
Solute
Strong acid
Strong base
Weak acid
Weak base
Substance
Concentration · drag the chart
pKa (custom)
Chart
pH vs C
α vs C
Buffer pair
Acetate
Formate
NH₃ / NH₄Cl
[CH₃COOH] · [CH₃COONa] (mol L⁻¹)
Buffer capacity test · 1.00 L
+ 0.01 mol HCl
+ 0.01 mol NaOH
Reset
Target pH helper
Make it
Salt of (S = strong, W = weak)
SA + SB
WA + SB
SA + WB
WA + WB
Salt
Salt concentration · drag the chart
Ksp task
Solubility & common ion
Mix two solutions
Which first?
Salt
Common ion already present
Solution 1
Solution 2
Anions in the beaker
Cl⁻ + CrO₄²⁻ (Mohr)
Br⁻ + Cl⁻
Br⁻ + CrO₄²⁻
Starting anion concentrations
[Ag⁺] added · drag the chart
Classic problems · test yourself
Predict, then reveal (P)