Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

(b) When mercuric iodide is added to an aqueous solution of KI, the freezing point is raised.

(b) When mercuric iodide is added to an aqueous solution of KI, the freezing point is raised.

Grade:11

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
7 years ago
In the presence iodide, Hg(II) forms a very stable HgI₄²⁻ complex:

Hg²⁺ + 4 I⁻ ⇌ HgI₄²⁻ . . . Kf = 6.8 × 10²⁹

Suppose, for example, you had one liter of a 0.1 M solution of KI, you'd have [K⁺] = 0.1 M and [I⁻] = 0.1 M. Now if you add 0.05 mol HgI₂ you have [K⁺] = 0.1 M and [HgI₄²⁻] = 0.05 M. The total ionic concentration is reduced the freezing point depression (compared to pure water) is reduced too. Therefore, the freezing point (compared to te KI solution) is raised.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free