Zadania z chemii IB HL

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Filtry i umiejętności1

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…

$10.0\ \mathrm{cm^3}$ of a gaseous hydrocarbon, $\ce{C_xH_y}$ , is burned completely in exactly the required volume of oxygen. The gaseous products occupy $70.0\ \mathrm{cm^3}$ . This falls to $30.0\ \mathrm{cm^3}$ once the water vapour present condenses, with…

In a redox titration, dichromate(VI) ions are reduced to chromium(III) ions and iron(II) ions are oxidized to iron(III) ions. $\ce{Cr2O7^2-(aq)}$ reduced to $\ce{Cr^3+(aq)}$ $\ce{Fe^2+(aq)}$ oxidized to $\ce{Fe^3+(aq)}$ What volume of…