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ashcormu11
18.10.2020 •
Chemistry
Based on the three formulas shown, use one of them to solve for the purple yellow and red box and explain how you did it.
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Ответ:
P = 11.133 atm (purple)
T = -236.733 °C(yellow)
n = 0.174 mol(red)
Further explanationSome of the laws regarding gas, can apply to ideal gas (volume expansion does not occur when the gas is heated),:
Boyle's law at constant T, P = 1 / V Charles's law, at constant P, V = T Avogadro's law, at constant P and T, V = nSo that the three laws can be combined into a single gas equation, the ideal gas equation
In general, the gas equation can be written
where
P = pressure, atm
V = volume, liter
n = number of moles
R = gas constant = 0.08206 L.atm / mol K
T = temperature, Kelvin
To choose the formula used, we refer to the data provided
Because the data provided are temperature, pressure, volume and moles, than we use the formula PV = nRT
Purple boxT= 10 +273.15 = 373.15 K
V=5.5 L
n=2 mol
![\tt P=\dfrac{nRT}{V}\\\\P=\dfrac{2\times 0.08205\times 373.15}{5.5}\\\\P=11.133~atm](/tpl/images/0818/6866/b1bbc.png)
Yellow boxV=8.3 L
P=1.8 atm
n=5 mol
![\tt T=\dfrac{PV}{nR}\\\\T=\dfrac{1.8\times 8.3}{5\times 0.08205}\\\\T=36.42~K=-236.733^oC](/tpl/images/0818/6866/c2536.png)
Red boxT = 12 + 273.15 = 285.15 K
V=3.4 L
P=1.2 atm
Ответ: