Question

4. What is the activation energy of a chemical reaction if the reaction rate triples when the temperature goes from 10°C to 30°C?

• 7.0 × 10⁻²⁰ J

• 6.0 × 10⁻²⁰ J

• 7.5 × 10⁻²⁰ J

• 6.5 × 10⁻²⁰ J

• 5.5 × 10⁻²⁰ J

2. In an isochoric process, the internal energy of a system decreases by 50 J. What is the heat flow to the system?

( I selected -50J is that correct?)

• zero

• +50 J

• −50 J

• none of the above

Answer 1