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Question

Which of the followings are dissociation?
1. MgCl2Mg2++2Cl
2. PbBr2Pb2++2Br
3. NaClNa++Cl

A
1 and 2
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B
1 and 3
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C
2 and 3
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D
1, 2 and 3
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Solution

The correct option is D 1, 2 and 3
Dissociation involves separation of ions which are already present in ionic compounds.
The given reactions follow this criteria.
Hence, all 1,2 and 3 are dissociation.

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