At room temperature,table salt is a solid and mercury is a liquid.what conclusion can you draw about the melting points of these
2 answers:
Explanation:
It is known that room temperature is the temperature which is equal to or in kelvin it is equal to 298 K.
Since, room temperature is a low temperature and at this temperature table salt exists as a solid. So, it means that at room temperature there occurs strong intermolecular forces of attraction between the molecules of table salt.
Whereas at room temperature, mercury exists as a liquid. So, there are less strong intermolecular forces of attraction between the molecules of mercury.
This also means that melting point of mercury will be low as it has weak intermolecular forces of attraction as compared to table salt at .
Therefore, we can conclude that melting point of mercury is less than the melting point of table salt.
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<u>Answer:</u> The volume of acid should be less than 100 mL for a solution to have acidic pH
<u>Explanation:</u>
To calculate the volume of acid needed to neutralize, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is HCl
are the n-factor, molarity and volume of base which is NaOH
We are given:
Putting values in above equation, we get:
For a solution to be acidic in nature, the pH should be less than the volume of acid needed to neutralize.
Hence, the volume of acid should be less than 100 mL for a solution to have acidic pH