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well i THINK heating the solution will speed up the reaction in the solution before adding the precipitate since the final observation required is the precipitation. you dont add the reagent before heating since it may give a false observation after heating, it might not precipitate normally but since you've otherwise it might.
BY : RAY LEE SEACREST
Wiki User
∙ 11y ago
Wiki User
∙ 6y agoThe purpose is to avoid splashing.
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Why the NaOH solution is heated before adding BaCl2 in the two solutions method for determination of purity of NaOH sample?
Why the NaOH is heated before adding in BaCl2 for determination of purity of NaOH sample?
Why is a solution heated during evaporation in the laboratory?
Because evaporation is accelerated after increasing of the temperature.
what are chemical rocks formed by?
By precipitation or evaporation of saturated solutions.
What is heated liquid turned to gas called?
Evaporation is the process and the gas formed by liquid in heated condition is called vapours
What takes place when liquid absorbs energy and changes to a gas?
It be evaporation. ~answered by FightingLucario
What is the word for when a liquid changes to a solid when heated?
evaporation evaporation
When air is heated what hapeens to it?
evaporation
What evaporation mean?
evaporation means when something gets heated and went in the sky.
What happens when seawater is heated by the sun?
Evaporation
Where water has been heated to a gas?
Evaporation
What doese evaporation mean?
evaporation means when something gets heated and went in the sky.
Why is a solution heated during evaporation in the laboratory?
Because evaporation is accelerated after increasing of the temperature.
Does evaporation speed up as the temperature increases?
Yes, that is how evaporation occurs: when water is heated.
Why the NaOH solution is heated before adding BaCl2 in the two solutions method for determination of purity of NaOH sample?
Why the NaOH is heated before adding in BaCl2 for determination of purity of NaOH sample?
Does evaporation only happen when water is heated to high temperature?
Evaporation occur at any temperature.
Why evaporation is faster from a heated crucible?
because it is faster
What do you call the Evaporation of electrons from heated surface?
radiation
