STATEMENT-1: The boiling point of C2H5OH is less than that of H2O though the molecular weight of C2H5OH is more than that of water. STATEMENT-2: C2H5OH molecules are not highly associated through hydrogen bonding as in water.
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
STATEMENT-1 is True, STATEMENT-2 is False
STATEMENT-1 is False, STATEMENT-2 is True
A
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
B
STATEMENT-1 is True, STATEMENT-2 is False
C
STATEMENT-1 is False, STATEMENT-2 is True
D
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
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Solution
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The hydrogen bonding in a water molecule is higher than the ethanol molecule. The attraction of the −OH bonding electron towards the oxygen atom leaves a deficiency on the site of the H atom related to the oxygen atom. As a result, the attractive force between the O−H hydrogen and O atom of a nearby water molecule is strongest when the three atoms are closer to each other. Due to this, H bonding in water is higher than the ethanol molecule.
So, the boiling point of C2H5OH is less than that of H2O
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Q1
STATEMENT-1: The boiling point of C2H5OH is less than that of H2O though the molecular weight of C2H5OH is more than that of water. STATEMENT-2: C2H5OH molecules are not highly associated through hydrogen bonding as in water.
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Q2
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