2. A student was asked to identify a sample of unknown hydrate. Student was provided withthe following experimental data.3.51 g sample of the hydrate when heated loses water completely and the mass of theresidue was found to be 2.22 g.Student was provided with two reference compounds from which student needs to identifythe unknown: Cu(NO3)2. 3H20 and Cu(NO3)2.6H2O. Answer the followings.a. Calculate percent water of hydration in the sample. (show your calculations)b. Identify the formula of the hydrate.2.

(a) Mass of water lost when heated is, Mass percent of water in the sample is calculated as…

Answered: 2. A student was asked to identify a…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 8CR

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A 0.755-g sample of hydrated copper(II) sulfate CuSo4xH2O was heated carefully until it had changed completely to anhydrous copper(II) sulfate (CuSO4 ) with a mass of 0.4183 g. Determine the value of x. [This number is called the number of waters of hydration of copper(II) sulfate. It specifies the number of water molecules per formula unit ofCuSO4 in the hydrated crystal.]
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