The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

water of crystalization

why is the answer by using a dehydrating agent wrong here??
the ms answer was heat to constant weight/mass..
w.o.PNG5.5KB
Reply 1
Avatar for Pigster
Pigster
20
What drying agent would you use?

All of the common drying agents work by pulling water from the atmosphere and adding it to their waters of crystallisation. Why would water want to leave one crystal only to into another one? Surely there would just be an equilibrium. Oh the horrible maths.
Original post by Pigster
What drying agent would you use?

All of the common drying agents work by pulling water from the atmosphere and adding it to their waters of crystallisation. Why would water want to leave one crystal only to into another one? Surely there would just be an equilibrium. Oh the horrible maths.

no not drying agent, a dehydrating agent.... isn't it used to remove water of crystalization!!
Reply 3
Avatar for Pigster
Pigster
20
Such as conc. sulfuric acid? How would you know the mass of the anhydrous solid?

Much much easier to heat to constant mass. As Mr Punch would say, "That's the way to do it."
Reply 4
Avatar for djmans
djmans
2
Original post by pondsteps
why is the answer by using a dehydrating agent wrong here??
the ms answer was heat to constant weight/mass..


must be heated to a constant mass i think

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you