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Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid,...

Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl ( aq ) , as described by the chemical equation MnO 2 ( s ) + 4 HCl ( aq ) ⟶ MnCl 2 ( aq ) + 2 H 2 O ( l ) + Cl 2 ( g ) How much MnO 2 ( s ) should be added to excess HCl ( aq ) to obtain 215 mL Cl 2 ( g ) at 25 °C and 705 Torr ?

mass of MnO2: ?

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Answer #1

Find moles of el pu= nRT P=205 torr = 0.927 632 atm latm= 760 tours V=215ml= 0.2152 n= moles of cl = ? R=0.0821 L-atmi mor kl

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