activation energy and rate of reaction

The activation energy of a certain reaction is 76.7 kj/mol. How many times faster will the reactionj occur at 62 degrees C than at 5 degrees C?

electrolysis

By the electrolysis of water, 11.2L of oxygen at STP was prepared. a) what charge was required? b) If a current of 0.5A was used, how long would it take?

Chemical Kinetics

Chemists commonly use a rule of thumb that an increase of 10 K in temperature doubles the rate of a reaction. What must the activation energy be for this statement to be true for a temperature increase from 49 to 59°C?

Only for 103139, 103897

Only for above OTAs. Galvanic cell: What possible metals and solutions can be a part of each half of the galvanic cell - cathode and anode-and why?

2nd General Chemistry College Course Pactice Exam

SHOW ALL WORK Useful numbers: R = 0.08206 L atm/mol K = 8.314 J/mol K 1 atm = 760 torr = 760 mm Hg Multiple choice (2 points each) 1. I dissolved some NaCl in pure water, the boiling point was ________? a) same as pure water b) higher than pure water c) lower than pure water d) none of the above 2. Which change in the system will change drive the equilibrium to the left in the reaction below? N2O5(g)  NO2(g) + NO3(g) a) Decrease the amount of NO3 b) Increase the amount of N2O5 c) Increase the pressure d) Increase the volume 3. The slowest step in a reaction is called the _______ step? a) activation b) element... click for more