Why pcl5 dissociates to give pcl3 and pcl2
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HEY MATE HERE IS YOUR ANSWER
Pcl5 has a trigonal pyramidal shape. The bond pair – bond pair repulsion is greater in the two axial P-Cl bonds as compared to the three equatorial P-Cl bonds. So the axial P-Cl bonds are less stable and are removed readily when PCl5 is heated.
Pcl5 has a trigonal pyramidal shape. The bond pair – bond pair repulsion is greater in the two axial P-Cl bonds as compared to the three equatorial P-Cl bonds. So the axial P-Cl bonds are less stable and are removed readily when PCl5 is heated.
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pcl5 dissociates to give pcl3 and pcl2 due to use of heat in the reaction. This reaction is an decomposition reaction.
★ 3pcl5→ 2pcl3 + pcl2★
★ 3pcl5→ 2pcl3 + pcl2★
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