In the purification of bauxite by Hall's proc | vedclass

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(B) In Hall's process,the bauxite ore is fused with sodium carbonate $(Na_2CO_3)$ to form soluble sodium aluminate $(NaAlO_2)$.$Al_2O_3 \cdot 2H_2O +

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Bauxite ore is fused with $Na_2CO_3$

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(B) In Hall's process,the bauxite ore is fused with sodium carbonate $(Na_2CO_3)$ to form soluble sodium aluminate $(NaAlO_2)$.$Al_2O_3 \cdot 2H_2O + Na_2CO_3 	o 2NaAlO_2 + CO_2 + 2H_2O$The resulting solution is filtered and treated with $CO_2$ to precipitate aluminum hydroxide:$2NaAlO_2 + 3H_2O + CO_2 \xrightarrow{333 \ K} 2Al(OH)_3 \downarrow + Na_2CO_3$Finally,the aluminum hydroxide is calcined to obtain pure alumina:$2Al(OH)_3 \xrightarrow{1473 \ K} Al_2O_3 + 3H_2O$

$I$ (Method)	$II$ (Ore)
$(I)$ Magnetic separation	$a. Cu_2S$
$(II)$ Froth flotation	$b. FeCr_2O_4$
$(III)$ Gravity separation	$c. Al_2(SiO_3)_3$

In the purification of bauxite by Hall's process:

Similar Questions

In the Serpek process for the purification of bauxite,what is used to remove silicon dioxide?

Match the method of concentration of ore in Column $I$ with the ore in Column $II$.

$I$ (Method) $II$ (Ore)

$(I)$ Magnetic separation $a. Cu_2S$

$(II)$ Froth flotation $b. FeCr_2O_4$

$(III)$ Gravity separation $c. Al_2(SiO_3)_3$

Bauxite,an ore of aluminium,is purified by which process?

For which ore of the metal,froth floatation method is used for concentration?

An ore containing the impurity of $FeCr_2O_4$ is concentrated by

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