Physical Chemistry Answers

How many grams are there in 7.04 moles of Agno3

Justify the following statements according to your perception: -

I. For enthalpy of bond formation, the term average energy is usually used

II. For enthalpy of solution, the term integral enthalpy is usually used

III. Lattice energy is always negative

IV. In the case of an exothermic reaction, the product have a high boiling point

The experimental rate law of a reaction A + B → C is v = k[A]2[B]. (a) Determine to- tal order of the reaction. (b) Imagine initial conditions at which the rate equals v0. If the concentration of reagent A is doubled and the concentration of B is halved, what will happen with the reaction rate? 

The half-life of a first-order reaction A → products is 50 s. Calculate: (a) the rate constant and (b) the concentration of the reactant at 25 s after the initiation of the re- action, if the initial concentration of the reactant is 0.5 mol/L. 

Calculate the activation energy for a second-order reaction if its rate constant in- creases from 2.5 mol/(L·s) to 250 mol/(L·s) as the temperature increases from 298 to 340 K. 

What is ΔG for the melting of ice at -10 ◦C, if H = 6.01 kJ/mol and S = 0.022 kJ K-1mol-1?