What happens to a catalyst in a reaction?
A. It is unchanged.
B. It is incorporated into the products.
C. It is incorporated into the reactants.
D. It evaporates away.Weegy:
The answer is A. It is unchanged.Auto answered|Score 1|sharpies|Points 8827|User:
Which of the following statements about reaction rates is not true?
A. One way to increase the reaction rate is to increase the temperature of the system.
B. One way to slow down the reaction rate is to decrease the temperature of the system.
C. One way to increase the reaction rate is to decrease the concentration of reactants.
D. One way to increase the reaction rate is to decrease particle size.
A. Increasing the temperature will increase reaction rateAuto answered|Score 1|AwesomeGuy200|Points 1177|User:
Active sites are specific to one type of _____.
Active sites are specific to one type of: C. SUBSTRATE. http://en.wikipedia.org/wiki/Active_centreAuto answered|Score 1User:
Which of the following factors affects a reaction rate the most?
A. activation energy
B. whether one or two reactant molecules is required
C. relative energy in reactant and product molecules
D. relative masses of reactant and product moleculesWeegy:
A. activation energy Auto answered|Score 1|Controler|Points 3928|User:
If a catalyst is used in a reaction,
A. the energy of activation increases.
B. different reaction products are obtained.
C. the reaction rate increases.
D. the reaction rate does not changeWeegy:
It is letter C. the reaction rate increases.
A catalyst is a substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process. [ In an equilibrium reaction it speeds up the rate of forward and backward reactions. But a catalyst will not affect the final equilibrium of the reaction.
] Expert answered|carl1980|Points 112|
All Categories|No Subcategories|Expert answered|Rating 0| 5/3/2013 1:19:37 AM