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General Chemistry - Quiz 1 1998

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

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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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