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0.002m aqueous solution of an ionic comp...

`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)`

A

3

B

4

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
The number of moles produced by 1 mole of ionic comppound.
` Delta T _(f) = ik_(f) m, I = Delta T_(f)//K_(f) m`
`Delta T_(f) = 0 - (- 0.00732)`
` = 0.00732^(@)`
`k_(f) = 1.86^(@)C//m`
m = 0.0020
` I = (0.00732)/(1.86 xx 0.0020)`
` = 1.968 ~~ 2`
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Knowledge Check

  • A 0.0020m aqueous solution of an ionic compound Co(NH_(3))_(5)(NO_(2))Cl freezes at -0.00732^(@)C . Number of moles of ions which 1 mol of ionic comound produces on being dissolved in water be (K_(f)=-1.86^(@)C//m)

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