Physical Chemistry Answers

Given the following information, what would the overall order of the reaction be?
C6H5N2Cl(aq)+H2O(l) C6H5OH(aq)+N2(g)+HCl(aq)
Rate=k[C6H5N2Cl]1
[H2O]0

The integrated rate law for the zero-order reaction A → B is [A]t = [A]o – kt
sketch the following plots:
(i) rate vs. [A]
(ii) [A] vs. t

Determine the value of the rate constant for the given elementary reaction: given
that when [Br2] is 0.15 M and [H2] is 0.2M, the rate of reaction is 0.005 M s
-1
at
298 K.
H2(g)+Br2(g)→2HI(g)

Write the rate of reaction in terms of the rate of disappearance of reactant and the
rate of formation of products:
1. NO(g)+O3(g)→NO2(g)+O2(g)
2. 2C2H6(g)+7O2(g)→4CO2(g)+6H2O(aq)
3. H2(g)+I2(g)→2HI(g)
4. 4OH(g)+H2S(g)→SO2(g)+2H2O(aq)+H2(g)

Using the following data, which is the correct rate law of the sample reaction?
A + 5B + 6C → 3D + 3E
Experiment [A] (M) [B] (M) [C] (M)
Initial Rate
(M/s)
1 0.35 0.35 0.35 8x10-4
2 0.70 0.35 0.35 3.2x10-3
3 0.70 0.70 0.35 6.4x10-3
4 0.70 0.35 0.70 3.2x10-3

. What is the temperature of a system that consists of 4.00 moles of argon behaving as an ideal gas with an internal energy of 15500 J?

Assume the half-life of the first order decay of radioactive isotope takes about 1
year (365 days). How long will it take the radioactivity of that isotope to decay by
60%?

prepare 100ml of 2% sodium carbonate in 0.1 N NaOH

Determine pH of a 4*10-3M Na-salicylate solution in 0.05 M NaCl .