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A 0.002 M aqueous solution of an ionic c...

A `0.002 M` aqueous solution of an ionic compound `[Co(NH_(3))_(5)(NO_(2))] Cl` freezes at `-0.00732^(@)C`. Find the number of moles of ions which `1` mole of ionic compound produces of being dissolved in water. `(K_(f) = -1.86^(@)C//m)`.

A

3

B

4

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
The given ionic compound is actully a complex, which dissociates as follows: `[Co(NH_(3))_(5)(NO_(2))]C1` `[Co(NH_(3))_(5)NO_(2))]^(+) + C1^(-)`
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0.002m aqueous solution of an ionic compound Co(NH_(3))_(5)(NO_(2))CI freezes at -0.00732^(@)C .Number of moles of ions which 1 mole of ionic compound produces in water will be (K_(f) = 1.86^(@)C//m)

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