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  • Which method is used for refining Zr and Ti ? Explain with the equation.

Which method is used for refining Zr \; and\; Ti ? Explain with equation.

Answers (1)

Van Arkel method is used in refining of Zr \; and\; Ti . The crude metal, on heating with iodine forms volatile unstable compound. Pure metal is then obtained by decomposing the compound.

The equations are : \text {Zr (s) (impure)+2I}_{2}\overset{870\; K}{\rightarrow}\text {ZrI}_{4}

                                               \text {ZrI}_{4}\overset{1800\; K}{\rightarrow}\text {Zr (pure)+2I}_{2}

                                            \text {Ti (impure)+2I}_{2}\overset{523\; K}{\rightarrow}\text {TiI}_{4} \text {(g)}

\text {TiI}_{4}\overset{1700\; K}{\rightarrow}\text {Ti (pure)+2I}_{2}

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