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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
What else can I help you with?
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 are two types of evaporation?
Two types of evaporation are solar evaporation, which occurs when water is heated by the sun, and mechanical evaporation, which involves the use of machines to heat water and accelerate the evaporation process.
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
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 speed up as the temperature increases?
Yes, that is how evaporation occurs: when water is heated.
Why is a solution heated during evaporation in the laboratory?
Because evaporation is accelerated after increasing of the temperature.
Does evaporation only happen when water is heated to high temperature?
Evaporation occur at any temperature.
What do you call the Evaporation of electrons from heated surface?
radiation
Does evaporation happen faster if water is heated?
yes
Why evaporation is faster from a heated crucible?
because it is faster
