Sodium metal reacts with water to produce hydrogen gas according to the following equation: 2Na(s) + 2H2O(l)2NaOH(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 759 mm Hg. If the wet H2 gas formed occupies a volume of 6.20 L, the number of moles of Na reacted was  mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter5: Gases, Liquids, And Solids
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Sodium metal reacts with water to produce hydrogen gas according to the following equation:

2Na(s) + 2H2O(l)2NaOH(aq) + H2(g)

The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 759 mm Hg. If the wet H2 gas formed occupies a volume of 6.20 L, the number of moles of Na reacted was  mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.
 
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