Zadania z chemii IB HL

4.06 g of hydrated magnesium chloride, $\ce{MgCl2*6H2O}$ ($M_\mathrm{r}$ = 203), is dissolved in water to make 0.250 $\mathrm{dm^3}$ of solution. What is the concentration of chloride ions, in $\mathrm{mol\,dm^{-3}}$, in this solution? A. 0.0400 B. 0.0800 C.…

A student writing a report on chlorine as a disinfectant collects, from several websites and reference books, values for how much chlorine dissolves in pure water at various temperatures. Source Temperature / °C Solubility of chlorine A 5 1.18 g per 100…

A solution is prepared by dissolving 1.29 g of HA in water and making the volume up to $20.00\ \mathrm{cm^3}$. When the whole of this solution is titrated with $0.600\ \mathrm{mol\,dm^{-3}}$ sodium hydroxide, NaOH(aq), exactly $24.90\ \mathrm{cm^3}$ of the…