Which aqueous solution is the best conductor of an electrical current?
2 answers:
<u>Answer:</u> The correct answer is Option 4.
<u>Explanation:</u>
Electrical conductivity is defined as the degree to which a material can conduct electricity. Electricity is conducted by the free ions that are present in a solution.
Ionic compound on dissociation only forms ions which increases the electrical conductivity. More the concentration of the solution, more ions will be formed and more will be the electrical conductivity of the substance.
From the given options:
KOH is an ionic compound and is a covalent compound.
0.1M KOH has higher concentration that 0.01 M KOH.
Hence, the best conductor out of the given options will be 0.1 M KOH.
Therefore, the correct answer is Option 4.
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Answer : The volume of 1 mole of and
gases are the same.
Solution: Given,
Moles of = 1 mole
Moles of = 1 mole
Moles of = 2 mole
Formula used for ideal gas is :
P V = n R T
According to the question, the gases are at standard temperature and pressure. So, the volume of gases only depends on the number of moles. This means that the higher the number of moles, higher will be the volume of gas.
The moles of are more than the moles of
and
. So, the volume of
will be more.
And the moles of and
are equal. Therefore, their volumes are also equal.
Therefore, the best option is the volume of 1 mole of and
gases are the same.