A conductivity cell having a cell constant of 0.5 cm–1 filled with 0.02 M solution of KCl at
298 K gave a resistance of 20.2 Ω. The water used for preparing the solution had a conductivity
of 7.1 × 10–6 S cm–1. Calculate the molar conductivity of 0.02 M KCl solution.
Convert 2.9 x 105 um to km
The equilibrium constant for the reaction
H₂(g) + S(s) ⇔H₂S(g) is 20.0 at 925K and 10.25 at 1000K, respectively. To calculate the standard enthalpy of the reaction.
calculate the entropy of a system
having 6.9 x 1010 microstates.
For the equilibrium
2SO2(g)+O2(g) 2SO3(g) Kc=245 (at 100 K)
The equilibrium concentrations are [SO2]=0.204 M,[O2]=0.0264 M and
[SO3]=0.368 M. Suppose that the concentration of SO2 is suddenly halved calculate
The enthalpy of formation of NH3(g) as per the following reaction is -46.11 kJ/mol
at 298 K.
N2(g) + 3H2 (g) --> 2NH3(g)
Calculate the value of enthalpy of formation of NH3(g) at 100 °C. The Cp
values are given as: N2(g) = 29.12; H2(g) = 28.82; NH3(g) = 35.06. Assume the
given heat capacity values to be temperature independent in the range.
192 J of heat was supplied to a thermodynamic system and its internal energy was
found to decrease by 22 J. Calculate the amount of associated work and state
whether the work was done by the system or done on the system?
What is the minimum number of Calories expended by a 72.6 kg person who climbs a 30-story building? (Assume each flight of stairs is 14 ft high.) How many grams of glucose are required to supply this amount of energy?
What quantity of heat energy is released when 455 g of liquid water freezes?
The decrease in the work function A for process at constant temperative gives ____________
that can be obtained from the system during any change .
a Maximum work
b. Useful work
c Net work
d. Minimum work.