Zadania z chemii IB HL

Which salt forms a basic solution when dissolved in water? A. $\ce{KNO3}$ B. $\ce{NH4Br}$ C. $\ce{CH3COOK}$ D. $\ce{NaHSO4}$

Hexanoic acid, $\ce{CH3(CH2)4COOH}$, is a weak acid. The graph shows how the pH changes during the titration of a 20.0 $\mathrm{cm^3}$ aqueous solution of hexanoic acid with aqueous sodium hydroxide. (i) Deduce an expression for the equilibrium constant, $K$,…

Which aqueous solution has the highest pH? A. 0.010 $\mathrm{mol\,dm^{-3}}$ $\ce{KNO3}$ B. 0.010 $\mathrm{mol\,dm^{-3}}$ $\ce{NH4NO3}$ C. 0.010 $\mathrm{mol\,dm^{-3}}$ $\ce{CH3COONa}$ D. 0.010 $\mathrm{mol\,dm^{-3}}$ $\ce{NaHSO4}$