A reaction has the expeimental rate law = rate = k[A]2[B]. If the concentraion of A is doubled and the concentration of B is halved, what happens to the reaction rate?
5. A reaction has the expeimental rate law = rate = k[A]2[B]. If the concentraion of A is doubled and the concentration of B is halved, what happens to the reaction rate?
11. Studies of radioactive decay of nuclei show that the decay rate of the radioactive sample is proportional to the amount of the radioactive species present. Once half the radioactivity has disappeared, the radioactive decay rate is only half of its original value. Is radioactive decay a zeroth-order, first order, or second order process?
13. Which of these reactions are unimolecular and elementary, which are bimolecular and elementary, and which are not elementary?
a. HCl(g) + H2O(g) -----> H3O+(g) + Cl-(g)
b. I- (g) + CH3Cl(g) ----> ICH3(g) + Cl-(g)
c. C2H6 (g) -----> C2H4(g) + H2(g)
d. N2(g) = 3 H2(g) ---> 2 NH3 (g)
e. O2(g) = O(g) ---> O3(g)
15. The activation energy Ea is 139.7 kJ mol-1 for the gas pahse reaction
HI + CH3I ----> CH4 + I2
Calculate the fraction of the molecules whose collisions would be energetic enough to react at
A. 100°C
B. 200°C
c. 500°C
d. 1000°C
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