Physical Chemistry Answers

Discuss the phase diagram of KI-H2O system giving the suitable diagram.

what is net radox reaction

The vapor pressure of a pure water at 50C is 0.1217 atm. The vapor pressure of a solution containing 90 g of a non-volatile organic compound in 1000g of water at the same temperature is 0.1184 atm. Calculate the molar mass of the organic compound by assuming the solution is dilute.

The vapor pressure of pure water at 50C is 0.1217 atm. The vapor pressure of a solution containing 90g of a non-volatile organic compound in 1000g of water at the same temperature is 0.1184 atm. Calculate the molar mass of the organic compound by assuming the solution is dilute.

The enthalpy change (ΔH) and entropy change(ΔS) for the reaction of 30.54 kj mol-¹ and 0.06 kj mol-¹ respectively. Calculate the temperature at equilibrium. Also predict the spontaneity below the temperature at which Gibb's free energy is zero. Justify your answer with a valid reason.

0.1M Formic Acid solution is titrated against 0.1 M NaOH solution.What would be the difference in pH between 1/5 and 4/5 stages of neutralization of acid?

Explain the position of 1A and 2B elements on the periodic table ?

2. The reaction for the formation of the diamminesilver ion is as follows:
Ag+ (aq) + 2 NH3 (aq)  Ag(NH3)2+

(a) Write the equilibrium constant expression for the reaction





(b) An experiment was carried out to determine the value of the equilibrium constant, Kc, for the reaction.
Total moles of Ag+ present = 3.6 x 10-3 moles
Total moles of NH3 present = 6.9 x 10-3 moles
Measured concentration of Ag(NH3)2+ at equilibrium = 3.4 x 10-2 M
Total solution volume = 100 mL

Calculate the equilibrium concentration of Ag+ (uncomplexed).






Calculate the equilibrium concentration of NH3 (uncomplexed).






Calculate the value of the equilibrium constant.

Determine molar conductivity given length 2cm surface area 2.5cm² ,0.001moldm³ of kcl at 25°c.. Conductivity meter deeped into solution reads 0.005Scm¹

how much of sodium carbonate would be required to make 250 ml and 200 ml solution of 0.05m