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LenKa [72]
3 years ago
14

Explain why the column of a fractional distillation apparatus should be aligned as near to the vertical as possible

Chemistry
1 answer:
____ [38]3 years ago
7 0
<span><span>The column of a fractional distillation apparatus should be aligned vertical to get better separation because the column is essentially longer. It will prevent channeling in the column. </span>Therefore column efficiency will be higher if it is as vertical as possible instead of tilted.<span> Distillation is a process used to separate a mixture of two (or more) components. In a typical </span>fractional distillation, a liquid mixture is heated in the distilling flask and the process begins.</span>
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At what temperature would the volume of a gas be 0.550 L if it had a volume of 0.432 L at –20.0 o C?
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The temperature that  would  the volume of a gas  be 0.550l  if  it  had a volume of 0.432 L  at  -20.0  c is calculated  using the Charles law formula

that is   v1/T1=V2/T2
V1=0.550 l
t1=?
T2= -20 c +273 = 253 K
v2= 0.432 l

by  making T1  the subject of the formula  T1= V1T2/V2


T1=  (0.55lL x253)/  0.432 l = 322.11 K  or  322.11-273 = 49.11 C
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A 2.00 liter evacuated container has a mass of 1050.0 g. When the container is filled with an unknown gas at 800. mm Hg pressure
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(A) 28

Explanation:

To solve this problem we use the <em>PV=nRT equation</em>, where:

  • P = 800 mmHg ⇒ 800/760 = 1.05 atm
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  • n = ?
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We<u> input the data</u>:

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And <u>solve for n</u>:

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Now we calculate the gas' mass:

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Finally we <u>calculate the unknown gas' molar mas</u>s, using<em> its mass and its number of moles</em>:

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