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The boiling point of o-nitrophenol is lower than that of p-nitrophenol due to differences in intermolecular hydrogen bonding. In o-nitrophenol, the hydroxyl (-OH) group and the nitro (-NO2) group are positioned ortho to each other, which can lead to steric hindrance and less effective hydrogen bonding compared to the para isomer. In p-nitrophenol, the groups are positioned para to each other, allowing for stronger and more stable hydrogen bonding interactions, which results in a higher boiling point. Thus, the molecular interactions significantly influence their boiling points.
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Is the freezing point of ice cream lower or higher than the freezing point of water?
It is lower.
Will the freezing point always be a lower temperature than the boiling point?
Yes
Why does the boiling point of methylated spirits drop?
The boiling point of methanol is lower than the boiling point of ethanol.
Why p-nitrophenol has higher solubility in water than o-nitrophenol?
the ortho position is the key to the answer of this question. in this case the NO2 and OH group are neighbors and thus can interact via intramolecular bonding this on the other hand decreases the overall polarity of the molecule. when a molecule is less polar it travels faster through a polar adsorbent than a highly polar molecule.
Is the boiling point of but-1-ene lower than that of but-1-yne?
Yes, but-1-ene boiling at −6.47 °C, which is lower than the boiling point of but-1-yne: 8.08 °C
Why does p-nitrophenol has higher boiling point than o-nitrophenol?
o-nitrophenol forms intramolecular H bond and no association occurs whereas molecules of p-nitrophenol get associated through intermolecular H bonding and boils relatively at higher tem. (above the B.P.of water). Hence,only ortho-nitrophenol is steam volatile.
Why 4-nitrophenol more polar than 2-nitrophenol?
4-Nitrophenol is more polar than 2-nitrophenol primarily due to the positioning of the nitro group relative to the hydroxyl group. In 4-nitrophenol, the nitro group is located para to the hydroxyl group, allowing for effective resonance and dipole interactions that enhance polarity. In contrast, in 2-nitrophenol, the nitro group is ortho to the hydroxyl group, where steric hindrance and less effective resonance diminish the overall polarity. As a result, the intermolecular forces in 4-nitrophenol are stronger, contributing to its increased polarity.
Whose dipole moment is greater- orthonitrophenol or paranitrophenol?
The dipole moment of para-nitrophenol is greater than ortho-nitrophenol. This is because in para-nitrophenol, the nitro group is positioned opposite to the hydroxyl group, leading to a higher dipole moment due to the greater separation between the polar groups.
Can the freezing point be lower than its boiling point in a constant pressure?
At a constant pressure, the freezing point is always going to be lower than the boiling point.
Is the freezing point of ice cream lower or higher than the freezing point of water?
It is lower.
Which has the lower freezing point oxygen or ethanol?
Oxygen has a lower point.
What has a lower melting point than ionic solids?
Covalent compounds have a lower melting point.
What usually has a lower melting point than ionic solids?
Covalent compounds have a lower melting point.
Does ethanol has the lower boiling point?
It depends what chemical or compound you are comparing the boiling point to. Ethanol has an atmospheric pressure boiling point of 78.1 °C (172.6 °F). This is slightly lower than the boiling point of water at the same pressure, much lower than the boiling point of iron, much higher than the boiling point of bromine.
Will the freezing point always be lower temperature than the boiling point?
Yes
Will the freezing point always be a lower temperature than the boiling point?
Yes
Is a point outside a contour line higher or lower than the contour line?
lower.
