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3 years ago

Why can you separate isomers through distillation?

Chemistry

2 answers:

ipn [44]3 years ago

3 0

Because they have different boiling points

Murrr4er [49]3 years ago

3 0

Answer:The correct answer is :'because they have different boiling points'.

Explanation:

Isomers are those molecules with with same molecular formula but different structural formula.They have different atomic arrangement due to which there boiling point differ with one another.

For example: Butane as higher boiling point than 2 methyl propane because due to branching the boiling point of an hydrocarbon decreases.

Since they differ in boiling points thy can be easily separated from each other by the distillation process.

The principle behind the distillation process is the different liquids boils at different temperature.

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A gas has a volume of 1.75L at -23°C and 150.0 kPa. At what temperature would the gas occupy 1.30L at 210.0 kPa?

Nastasia [14]

Answer:

At -13 $^{0}\textrm{C}$ , the gas would occupy 1.30L at 210.0 kPa.

Explanation:

Let's assume the gas behaves ideally.

As amount of gas remains constant in both state therefore in accordance with combined gas law for an ideal gas-

$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

where $P_{1}$ and $P_{2}$ are initial and final pressure respectively.

$V_{1}$ and $V_{2}$ are initial and final volume respectively.

$T_{1}$ and $T_{2}$ are initial and final temperature in kelvin scale respectively.

Here $P_{1}=150.0kPa$ , $V_{1}=1.75L$ , $T_{1}=(273-23)K=250K$ , $P_{2}=210.0kPa$ and $V_{2}=1.30L$

Hence $T_{2}=\frac{P_{2}V_{2}T_{1}}{P_{1}V_{1}}$

$\Rightarrow T_{2}=\frac{(210.0kPa)\times (1.30L)\times (250K)}{(150.0kPa)\times (1.75L)}$

$\Rightarrow T_{2}=260K$

$\Rightarrow T_{2}=(260-273)^{0}\textrm{C}=-13^{0}\textrm{C}$

So at -13 $^{0}\textrm{C}$ , the gas would occupy 1.30L at 210.0 kPa.

5 0

4 years ago

Which one of these is an element? a. air b. water c. oxygen d. sodium chloride

Anastasy [175]

C.) Oxygen is an element among them...

6 0

4 years ago

1. Ba(OH)2 give the correct name for the ionic and covalent compounds

GaryK [48]

Answer:

barium hydroxide.......

7 0

4 years ago

Which of the following are physical properties?

lidiya [134]

Answer:

Explanation:

The properties that are observed or measured without changing the composition of matter are called physical properties.

color, Temperature, Texture are the physical properties as the composition of matter remains the same.

On the other hand, Radioactivity, Flammability and Reactivity comes under chemical property as during the chemical reactions there might be some changes in the properties.

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3 years ago

When an atom _________ an electron, it charge is positive.

Ugo [173]

Answer:

captures

Explanation:

when it captures

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3 years ago