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Desiccants (drying agents) can often be regenerated by heating. A desiccant that is commonly regenerated is
CaSO4?2H2O:
CaSO4?.2H2O(s) → CaSO4(s) + 2H2O(g)
?Ho = 25.1 kJ/mol; ?So = 69.3 J/molK
Regeneration is carried out at 250 oC.
a) What is the ?Go for this reaction?
n-propyl acetate (bp 102 C) evaporates rapidly when exposed to air, but water(bp 100C)does not. Explain why
What kind of relation is there between them and the force constants of vibration that you have calculated? The enthalpies of vaporization of carbon and silicon are 717 kJmol -1
1. Consider a platinum crystal structure (FCC, R Pt = .139 nm). a. Sketch the (100), (110), and (111) planes (including the atoms in the second layer if they can be observed
is relation a=2r+ + 2r- correct for bcc
What is the meaning of Casting - fabrication processes Fe-C alloys with more than 2% carbon are known as cast irons. On crossing liquidus, proeutectic crystallizes first. O
Advantage and disadvantage of westron
why equilibrium state attainable from either way?
The emf of the cell Cd/CdSO4(0.0093M)//CdSO4/Cd is 0.086V at 25°C find the value of X solution
Q. Effect of various additives on the stability of egg foam? recognize the different stages in the foam formation, explain the effect of various factors in foam format
INTRODUCTION : Alcohol is one of the most important chemicals used in the laboratories. In Biology and Chemistry laboratories it is used almost every day. In this exercise you wil
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