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During the cooling of the naphthalene why the boiling tube must be placed in a conical flask?
Wiki User
∙ 11y ago
ensure even cooling of the napthalene
Wiki User
∙ 11y ago
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During the cooling of naphthalene explain why the naphthalene must be stirred continuosly?
to ensure that the temperature is uniform throughout the liquid
During titration why use a conical flask and not a beaker?
So you can swirl the contents around without spilling them. =]
Why do you use clinical thermometer to measure the temperature of boiling water?
There's actually no need to measure the temperature boiling water. If water is boiling, it will always be 100°. This is because boiling is a cooling process. As you apply heat, water molecules who want to boil, breaking free and enter the gaseous phase. When this happens, they take some of the energy that you imported into the liquid with them. Thus once the liquid reaches the boiling temperature water will continue to evaporate until there is no more water left. During this time, it will remain 100°.
What happens to naphthalene when heated?
Naphthalene, which is found in mothballs, when heated sublimes (which means it changes from a solid directly into a gaseous state without going through the liquid state).
Which change takes place during the boiling water?
During boiling of water,water changes its state from liquid to gas due to a change in temperature. Therefore it is a physical change.
During the cooling of naphthalene explain why the naphthalene must be stirred continuosly?
to ensure that the temperature is uniform throughout the liquid
Why a conical flask containing a hot solution is not tightly stoppered to prevent solvent during cooling?
Because... if it's tightly sealed - during cooling the volume of the solvent will decrease - making the pressure inside lower than outside he flask. This could be enough for the glass to shatter - spilling the contents.
Is heat generated during boiling?
Boiling is an endothermic process.
What is boiling point in science?
during boiling,the temperature of a mixture is different at different times. during boiling,the temperature of a substance changes at the start then it becomes the same and constant.
What can you notice about the temperature of sea water during boiling?
The boiling point of sea water is higher compared with pure water. Temperature remain constant during boiling.
How does he amount of energy change during boiling?
During boiling the temperatre of the boiling liquid does not go up. The energy input into the boiling liquid is taken away as the latent heat of evaporation by the escaping gaseous phase.
During titration why use a conical flask and not a beaker?
So you can swirl the contents around without spilling them. =]
What is the normal boiling chips in the distilling task?
To avoid overpressure and splashing during boiling.
Why is boiling is called bulk phenomena?
During boiling the entire volume of the liquid is involved.
Why do you use clinical thermometer to measure the temperature of boiling water?
There's actually no need to measure the temperature boiling water. If water is boiling, it will always be 100°. This is because boiling is a cooling process. As you apply heat, water molecules who want to boil, breaking free and enter the gaseous phase. When this happens, they take some of the energy that you imported into the liquid with them. Thus once the liquid reaches the boiling temperature water will continue to evaporate until there is no more water left. During this time, it will remain 100°.
Why is the boiling of water a physical reaction and not a chemical reaction?
During boiling the chemical composition is not changed.
Is the OH bond breaks during boiling?
no
