Question

1.) you mix 1.0 mL of a 0.20 molar solution of toluene with 1.00 mL of a 0.05 molar solution of bromine, what is the number of moles of toluene?

2a.)A general rule of thumb is that you double the rate of a reaction by increasing the temperature 10 deg. C. How much faster is the reaction run in a boiling water bath than the same reaction run at room temperature (about 20 deg. C)?

2b)How much slower would a reaction be if it was run in an ice bath, compared to run at room temperature?

Answer 1

1.

molarity = no of moles / volume in liters

no of moles = 0.2 x 0.001 = 0.0002 moles

2.

a he has given every 10 ºC double the rate of the reaction

20 ºC to boiling water means 100 ºC

20 -----> 30 -----> 40 ------> 50 -------> 60 ------> 70 ------80 -----> 90 ------> 100 ºC

temperature is raising eight time

2⁸ = 256 times

b)

here reaction done at icebath means

temperature decreased from 20 ºC to 0 ºC

20---> 10---> 0 ºC

2² = 4 reaction will decrease four times slower