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Answer: A piece of sodium metal reacts completely with
Chapter 5, Problem 71P(choose chapter or problem)
A piece of sodium metal reacts completely with water as follows:
\(2 \mathrm{Na}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{g})\)
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 number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
Questions & Answers
QUESTION:
A piece of sodium metal reacts completely with water as follows:
\(2 \mathrm{Na}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{g})\)
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 number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
ANSWER:Step 1 of 3
The goal of the problem is to calculate the number of grams of sodium used in the reaction.
Given reaction:
\(\mathrm{2 Na(s) + 2 H_2O (l) \rightarrow 2 NaOH (aq) + H_2 (g)}\)
Given:
T = 25.0°C.
Volume of the gas = 246 mL = 0.246 L
P = 1.00 atm.
The vapor pressure of water at 25°C = 0.0313 atm.