General Chemistry - Quiz 1 1998

General Chemistry - Quiz 1 1998 - October 1, 1998 Dr....

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Page 1 of 8 October 1, 1998 Dr. Rashmi Venkateswaran CHM 1310 A GENERAL CHEMISTRY QUIZ 1 NAME STUDENT ID. No. DEMONSTRATOR’S NAME: LAB DAY: 1. A piece of sodium metal reacts completely with water as follows: 2 Na (s) + 2 H 2 O ( l ) 2 NaOH (aq) + H 2 (g) (7) The hydrogen gas generated is collected over water at 25.0 ° C. The volume of the gas is 246 mL measured at 1.00 atm. Calculate the mass of sodium used in the reaction given that the vapour pressure of water at this temperature is 23.8 Torr. The value of the gas constant R is 8.314 J mol -1 K -1 .
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2. In the metallurgical process of refining nickel, the metal is first combined with carbon monoxide to form tetracarbonylnickel, which is a gas at 43 ° C: Ni (s) + 4 CO (g) Ni(CO) 4 (g) This reaction separates nickel from other solid impurities. (a) Starting with 86.4 g of Ni, calculate the pressure of Ni(CO) 4 in a container of volume 4.00 L (assume that the above reaction goes to completion). (7)
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This note was uploaded on 01/16/2011 for the course CHM 1300 taught by Professor Venkataswaren during the Fall '08 term at University of Ottawa.

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General Chemistry - Quiz 1 1998 - October 1, 1998 Dr....

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