If the temperature is doubled from 20
oC to 40
oC, the time for the rate of reaction generally
(increases/decreases) _____ because the number of high energy collisions (increases/decreases) _____,
resulting in (increased/decreased) _________number of chemical reaction
Answers
Answer:
When you double the concentration the rate doubles. The rate is proportional to the square of the concentration of a reactant. ... The rate is not affected by the concentration of a reactant. When you double the concentration the rate stays exactly the same.
If you increase the concentration of a reactant, there will be more of the chemical present. More reactant particles moving together allow more collisions to happen and so the reaction rate is increased. The higher the concentration of reactants, the faster the rate of a reaction will be.
When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. ... That greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases.