# Problem: A piece of sodium metal reacts completely with water as follows:2Na (s) + 2H2O (l) → 2NaOH (aq) + H 2 (g)The hydrogen gas generated is collected over water at 23.0°C. The volume of the gas is 187 mL measured at 0.981 atm. Calculate the number of grams of sodium used in the reaction. (The vapor pressure of water at 23.0°C = 0.0277 atm.)

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###### FREE Expert Solution
81% (289 ratings)
###### Problem Details

A piece of sodium metal reacts completely with water as follows:

2Na (s) + 2H2O (l) → 2NaOH (aq) + H 2 (g)

The hydrogen gas generated is collected over water at 23.0°C. The volume of the gas is 187 mL measured at 0.981 atm. Calculate the number of grams of sodium used in the reaction. (The vapor pressure of water at 23.0°C = 0.0277 atm.)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Collecting Gas Over Water concept. If you need more Collecting Gas Over Water practice, you can also practice Collecting Gas Over Water practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofA piece of sodium metal reacts completely with water as foll...as medium difficulty.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Roychowdhury's class at RUTGERS.