LABLE THE VARIABLES IN THE EQUATION BELOW WITH THE CORRECT UNITS
RATE=k(a)(b)
UNITS M-2S-1, M, M.S-1, M-1S-1, S-1, M.S
WHAT IS K
WHAT IS A
WHAT IS B
To label the variables in the equation with the correct units, we need to understand the meaning of each variable in the equation:
- RATE: This represents the rate of reaction between two substances.
- k: This symbol represents the rate constant, which is specific to a particular reaction and is determined experimentally. It depends on the temperature and the nature of the reaction. The unit for k in this equation is M-2S-1.
- a and b: These symbols usually represent the concentration or the amount of the reactants involved in the reaction. The units for a and b can vary depending on the specific reaction. Let's look at each option provided:
a) M-2S-1: This unit is not a valid option for the concentration or amount of a reactant.
b) M: This unit represents the concentration in moles per cubic meter (Molarity).
c) M.S-1: This unit represents the rate of change of concentration with respect to time, also known as the reaction rate.
d) M-1S-1: This unit represents the inverse of concentration with respect to time, indicating a rate constant of a first-order reaction.
e) S-1: This unit represents the inverse of time, indicating a rate constant for a zero-order reaction.
f) M.S: This unit represents the product of concentration and time, indicating the integrated rate of a reaction.
Therefore, the correct units for the variables in the equation are:
- RATE: M.S-1 (rate of reaction)
- k: M-2S-1 (rate constant)
- a: M (concentration of reactant a)
- b: M (concentration of reactant b)
Regarding your specific questions:
- K is the rate constant, which is a value that needs to be determined experimentally for each specific reaction.
- A represents the concentration of reactant a, and its value can be obtained from experimental data or given in the problem.
- B represents the concentration of reactant b, and, similarly to a, its value can be obtained from experimental data or given in the problem.