Ammonia and potassium iodide solutions are added to an aqueous solution of Cr(NO 3 ) 3 .

Question:

Ammonia and potassium iodide solutions are added to an aqueous solution of Cr(NO3)3. A solid is isolated (compound A), and the following data are collected:

i. When 0.105 g of compound A was strongly heated in excess O2, 0.0203 g CrO3 was formed.

ii. In a second experiment it took 32.93 mL of 0.100 M HCl to titrate completely the NH3 present in 0.341 g compound A.

iii. Compound A was found to contain 73.53% iodine by mass.

iv. The freezing point of water was lowered by 0.64οC when 0.601 g compound A was dissolved in 10.00 g H2O (Kf = 1.86οC ? kg/mol).  

What is the formula of the compound? What is the structure of the complex ion present?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Chemistry

ISBN: 9781305957404

10th Edition

Authors: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Question Posted: