Solid white CaSO4 absorbs water from its surroundings and binds it tightly. It is sold as Drierite Desiccant for various

[answerhappygod]

Solid white CaSO4 absorbs water from its surroundingsand binds it tightly. It is sold as Drierite Desiccant for varioususes in the lab. Although relatively inexpensive, it suffers fromnot changing appearance when it absorbs water, i.e., when it isused up and fresh CaSO4 is needed. This problem is solved by usingBlue Drierite, which is also CaSO4, but contains a small amount ofblue CoCl2, an indicator of water in excess of what reacts with theCaSO4 present. The solid CoCl2 present absorbs water and turns pinkto indicate that fresh Drierite is needed. Used Drierite can beregenerated and reused by heating it and driving off all thewater.
Which of the following is true of using BlueDrierite?
Blue Drierite might be more likely to turn pink in acold working environment.
You can't save research money by mixing some BlueDrierite with a larger amount of just the cheaper white CaSO4 andmaking sure you are more aware of when the blue color that ispresent starts to turn pink.
Blue Drierite might be more likely to turn pink in a hotworking environment.
Used Blue Drierite can be regenerated for reuse iftreated with HCl vapors and turning it blue again.
Blue Drierite might be more likely to turn pink ifduring use it were exposed to some HCl fumes.