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74518 Pa at 340 K. The vapor pressure of the solid is 270 Pa at 232 K and 1092 Pa at 250 K.
(a) Calculate ∆Hvaporization and ∆Hsublimation.
(b) Calculate ∆Hfusion.
(c) Calculate the normal boiling point and ∆Svaporization at the boiling point.
(d) Calculate the triple point pressure and temperature
(a) When an engine is allowed to operate between 1000 K and 300 K.
(b) When an engine is allowed to operate between 1000 K and 600 K and then waste heat
passed on to another engine which operates between 600 K and 300 K.
( ) ( ) ( ) ( ) 2 2 2 CO g H O g CO g H g + → + H ( C)
o o 25
= -42.0 kJmol-1
Cp (CO) = 26.8 + 6 x 10-3T JK-1mol-1
Cp (H2O) = 30.1 + 10 x 10-3T JK-1mol-1
Cp (H2) = 28.5 + 2 x 10-3T JK-1mol-1
Cp (CO2) = 26.4 + 42 x 10-3T JK-1mol-1
where T is the thermodynamic temperature, calculate the change in enthalpy for the
reaction at 1000 K
When 5.73 g of sodium chloride (NaCl) dissolves in 100 cm3 of water, the temperature of the water fell from 22.4 oC to 19.8 oC. Calculate the enthalpy change of the reaction.
zeolite method and 50 mL of the treated water consumed 2.3 mL of EDTA solution. 50 mL of
SHW required 21 mL of EDTA. Calculate how much of hardness is removed by the zeolite
process? (SHW = 1 g/L)
How did you account for the abnormally high mobility of OH- ions in water?
The equilibrium constant for a particular reaction is 10^ -12 at 327 degree Celsius and 10^ -7 at 427 degree Celsius. Calculate the enthalpy of reaction.
For a particular chemical reaction, the free energy changes at 25 degree Celsius and 35 degree Celsius are -33.089kJ and -28.018kJ respectively. Calculate the heat of reaction.
water sample required 30 mL of N/50 H2SO4 for phenolphthalein end point and another 20
mL for complete neutralisation. Determine the type and extent of alkalinity present.
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#340153 on Dec 2023