Which of the following statements best describes the condition(s) needed for a s

Question

Which of the following statements best describes the condition(s) needed for a successful formation of a product according to the collision model? The collision most involve a sufficient amount of energy, provided from the motion of the particles, to overcome the activation energy. The relative orientation of the particles has little or no effect on the formation of the product. The relative orientation of the particles has an affect only if the kinetic energy of the particles is below some minimum value. The relative orientation of the particles must allow for formation of the new bonds in the product. The energy of the incoming particles must be above a certain minimum value, and the relative orientation of the particles must allow for formation of new bonds in the product. The catalyzed pathway in a reaction mechanism has a___________activation energy and thus causes a________reaction rate. higher, lower higher, higher lower, higher lower, steady higher, steady Determine the osmotic pressure of a solution that contains 0.048 g of a hydrocarbon solute (molar mass - 340 g/mol) dissolved in benzene to make a 350-mL solution. The temperature is 20.0 degree C. 0.50 torr 2.5 torr 3.3 torr 7.4 torr 6.9 torr The average rate of disappearance of ozone in the reaction 2O_3 (g) rightarrow 3O_2(g) is found to be 7.25 times 10^-3 atm over a certain interval of time. What is the rate of appearance of O_2 during this interval? 1.09 times 10^-3 atm/s 7.25 times 10^-3 atm/s 4.83 times 10^-3 atm/s 191 times 10^-3 atm/s 17.5 times 10^-3 atm/s

Explanation / Answer

23. C) lower , higher

24.

osmotic pressure = CRT

c = concentration of solution = (0.048/340)*(1000/350) = 0.000403 M

R = gas constant = 0.0821 l.atm.k-1.mol-1

T = temperature = 20 c = 293.15 k

osmotic pressure = 0.000403*0.0821*293.15

                  = 0.0097 atm

                = 7.372 torr

answer: D) 7.4 torr

25.

rate of appearance of O2 = 2/3*7.25*10^-3 = 4.83*10^-3 atm/s

answer: C

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