Search & Filtering
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.
Four moles of an ideal gas expand isothermally from 1litre to 10 litre at 300kelvin.calculate the change in free energy of the gas.(universal gas constant=8.314)
Calculate the entropy change in the evaporation of 1 mole of water at 100 degree celcius .latent heat of evaporation of water is 9,650 Cal's per mole.
___ K + ___ B2O3 → ___ K2O + ___ B
Atrazine can be removed from water by adsorption to activated carbon. The Freundlich {q=KC^(1/n)} parameters for atrazine are K = 182 mg/g (L/mg)^1/n and 1/n = 0.18. What is the adsorbed concentration of the contaminant (units of mg chemical per gram of activated carbon) if you want the aqueous phase concentration at equilibrium to be 10 μg/L? Round off to nearest integer.
Glucose reacts with oxygen and undergoes combustion to give carbon dioxide and water, as shown below:
C6H12O6 (g) + 6O2 (g) → 6CO2 (g)+ 6H2O(l)
The standard molar enthalpy change for the reaction is –2808 kJ/mol.
The enthalpy change of the reaction for 1.00 g of glucose is kJ.
2C2H6 + 7O2 -> 4CO2 + 6H2Owhat is the mass of carbon dioxide formed in this case?
what is the mass of carbon dioxide formed in this case?
Write the expression for Kp for the reaction 2HI= H2+I2
