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vichka [17]
3 years ago
14

water decomposes in an evacuated 2.00L container. If you started with 20.0 grams of water, determine the total resulting pressur

e of the two product gases if the reaction happens at 25°C.
Chemistry
1 answer:
Deffense [45]3 years ago
5 0

Resulting pressure is 13.6 atm.

<u>Explanation:</u>

Using Ideal gas equation, we can find the pressure of the gases formed in the reaction.

PV = nRT

Number of moles, n = given mass / molar mass = 20 g / 18 g/mol

                           = 1.11 moles

Volume, V = 2 L

Temperature, T = 25°C + 273 = 298 K

R = gas constant = 0.08206 L atm K⁻¹ mol⁻¹

P = nRT/V

 = 1.11×0.08206 ×298 / 2

 = 13.6 atm  

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