Which of the following actions will lead to a decrease in pressure?
2 answers:
<u>Answer:</u> The correct answer is decreasing temperature.
<u>Explanation:</u>
The relation between pressure, temperature, volume and number of moles of gas is given by the equal known as ideal gas equation:
or,
where,
P = Pressure of the gas
V = Volume of the gas
n = Number of moles of gas
R = Gas constant
T = Temperature of gas
From the above relation, it is visible that pressure is directly related to number of moles and temperature of the gas. So, if pressure decreases, the number of moles and temperature of the gas also decreases.
Also, pressure is inversely related to volume of the gas. So, if pressure gets decreased, the volume of the gas must increase.
And, pressure is directly related to number of collisions of the particles. Thus, if the pressure decreases, this means that number of collisions between the particles must also decrease.
Hence, the correct answer is decreasing temperature.
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Option C is the correct set of the problem for mass of water produced by 3.2 moles of oxygen and an excess ethene.
<h3>Reaction between oxygen and ethene</h3>Ethene (C2H4) burns in the presence of oxygen (O2) to form carbon dioxide (CO2) and water (H2O) along with the evolution of heat and light.
C₂H₄ + 3O₂ ----- > 2CO₂ + 2H₂O
from the equation above;
3 moles of O₂ ---------> 2(18 g) of water
3.5 moles of O₂ ----------> x
Thus, option C is the correct set of the problem for mass of water produced by 3.2 moles of oxygen and an excess ethene.
Learn more about reaction of ethene here: brainly.com/question/4282233
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