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Physical Chemistry
Which of the following has higher surface tension water of mercury ?
Physical Chemistry
Stale Hess 's law ot constant heat summation.
Physical Chemistry
What is a zero order reaction ?
Physical Chemistry
State Trouton 's rule .
Physical Chemistry
What are the SI units of energy ?
Physical Chemistry
What are the dimensions of R ?
Physical Chemistry
The extent of ionization of NaCl and MgCl2 in water is 80% and 50% respectively. If a sample of water has 5.85% (w/w) NaCl and 9.5% (w/w) of MgCl2, then the mixture (Hint: Kb = 0.52Kkg/mol)
1)acts as an azeotrope
2)At constant pressure, the temperature change is less than 2K
3)At constant volume, the pressure change is more than 0.5%
4)The solubilty product decreases for the two salts.
1)acts as an azeotrope
2)At constant pressure, the temperature change is less than 2K
3)At constant volume, the pressure change is more than 0.5%
4)The solubilty product decreases for the two salts.
Physical Chemistry
In 1N HCl solution, we have 0.1M Cu++ and Mn++ ions. To this solution we add dihydrogen sulfide gas which has a solubility of 0.1 in 1N HCl. If the equilibrium constant for dihydrogensulfide is 10^(-22), then
1)The concentration of sulfide ions is 10^(-23)
2)CuS will be precipitated but MnS will not
3)Both CuS and MnS will be precipitated
4)Neither CuS nor MnS will precipitate out
1)The concentration of sulfide ions is 10^(-23)
2)CuS will be precipitated but MnS will not
3)Both CuS and MnS will be precipitated
4)Neither CuS nor MnS will precipitate out
Physical Chemistry
The vapor pressure of liquid lead is 400. mm Hg at 1900 K. Assuming that its molar heat of vaporization is constant at 179 kJ/mol, the vapor pressure of liquid Pb is
mm Hg at a temperature of 1860 K.
mm Hg at a temperature of 1860 K.
Physical Chemistry
What is friction
