A known number of moles of gas is placed in a
2 answers:
<u>Answer:</u>
<em>A. The volume will increase.</em>
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<u>Explanation:</u>
As per Avagadro’s law
At constant temperature and pressure, the volume occupied by a gas is directly proportional to the number of moles of the gas.
Directly proportional means when one increases the other one too will increase. That is, Equal volume of different gases will have the same number of moles at constant temperature and pressure.
1 mole of Hydrogen gas at T = 273K and P = 1 atm occupies a volume of 22.4L
1 mole of Argon gas at T = 273K and P = 1 atm occupies a volume of 22.4L
This is given by the expression
(at constant temperature and pressure)
Introducing a constant we have
Where V is the volume, n is the number of moles and k represents a constant.
When there is a change in volume or number of moles we make use of the expression
As volume increases the number of moles occupies too will increase.
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<u>Answer:</u> The correct IUPAC name of the alkane is 4-ethyl-3-methylheptane
<u>Explanation:</u>
The IUPAC nomenclature of alkanes are given as follows:
- Select the longest possible carbon chain.
- For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.
- A suffix '-ane' is added at the end of the name.
- If two of more similar alkyl groups are present, then the words 'di', 'tri' 'tetra' and so on are used to specify the number of times these alkyl groups appear in the chain.
We are given:
An alkane having chemical name as 3-methyl-4-n-propylhexane. This will not be the correct name of the alkane because the longest possible carbon chain has 7 Carbon atoms, not 6 carbon atoms
The image of the given alkane is shown in the image below.
Hence, the correct IUPAC name of the alkane is 4-ethyl-3-methylheptane
