[desigirlxo]

1) Half life for a first order reaction is 32 S. What was the original concentration if after 2 mins the reactant concentration is .062M ?

2) Activation energy is 250kJ/mol. If rate constant at T1=300k is K1 and at T2=320K is K2, then the reaction is _______ times faster at 320K than at 300k.

3) What is the energy of a reaction whose rate constant increases by a factor of 100 upon increasing the temperature from 300k to 360k?

4) NOCl (g) <=> NO (g) + 1/2Cl2 (g)
When a 1.5 gram sample of pure NOCl is heated at 350C in a volume of 1 liter, the percent dissociation is found to be 57.2%. Calculate Kc.

5) Reversible reaction:
2SO2 (g) + O2 (g) <=> 2SO3
The reaction has come to equilibrium in a vessel of specific volume at a given temperature. Before the reaction began the concentrations of the reactants were .06M S02, and .05M O2. After equilibrium is reached concentration of SO3 is .04M. What is the equilibrium concentration of O2?



Thank you for any *delete me*!!!

[Astrokel]

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