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The Forward Rate Constant is defined as the rate constant for the forward occurring reaction. Check FAQs
kf=(kr+kcat)(ESES)
kf - Forward Rate Constant?kr - Reverse Rate Constant?kcat - Catalytic Rate Constant?ES - Enzyme Substrate Complex Concentration?E - Catalyst Concentration?S - Substrate Concentration?

Forward Rate Constant given Reverse and Catalytic Rate Constant Example

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Here is how the Forward Rate Constant given Reverse and Catalytic Rate Constant equation looks like with Values.

Here is how the Forward Rate Constant given Reverse and Catalytic Rate Constant equation looks like with Units.

Here is how the Forward Rate Constant given Reverse and Catalytic Rate Constant equation looks like.

5.3335Edit=(20Edit+0.65Edit)(10Edit25Edit1.5Edit)
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Forward Rate Constant given Reverse and Catalytic Rate Constant Solution

Follow our step by step solution on how to calculate Forward Rate Constant given Reverse and Catalytic Rate Constant?

FIRST Step Consider the formula
kf=(kr+kcat)(ESES)
Next Step Substitute values of Variables
kf=(20mol/L*s+0.65s⁻¹)(10mol/L25mol/L1.5mol/L)
Next Step Convert Units
kf=(20000mol/m³*s+0.65s⁻¹)(10000mol/m³25000mol/m³1500mol/m³)
Next Step Prepare to Evaluate
kf=(20000+0.65)(10000250001500)
Next Step Evaluate
kf=5.33350666666667s⁻¹
LAST Step Rounding Answer
kf=5.3335s⁻¹

Forward Rate Constant given Reverse and Catalytic Rate Constant Formula Elements

Variables
Forward Rate Constant
The Forward Rate Constant is defined as the rate constant for the forward occurring reaction.
Symbol: kf
Measurement: First Order Reaction Rate ConstantUnit: s⁻¹
Note: Value can be positive or negative.
Reverse Rate Constant
The Reverse Rate Constant is defined as the rate constant for the backward reaction.
Symbol: kr
Measurement: Reaction RateUnit: mol/L*s
Note: Value can be positive or negative.
Catalytic Rate Constant
The Catalytic Rate Constant is defined as the rate constant for conversion of the enzyme-substrate complex to enzyme and product.
Symbol: kcat
Measurement: First Order Reaction Rate ConstantUnit: s⁻¹
Note: Value can be positive or negative.
Enzyme Substrate Complex Concentration
The Enzyme Substrate Complex Concentration is defined as the concentration of intermediate formed from the reaction of enzyme and substrate.
Symbol: ES
Measurement: Molar ConcentrationUnit: mol/L
Note: Value can be positive or negative.
Catalyst Concentration
The Catalyst Concentration is the number of moles of catalyst present in the per liter of solution.
Symbol: E
Measurement: Molar ConcentrationUnit: mol/L
Note: Value can be positive or negative.
Substrate Concentration
The Substrate Concentration is the number of moles of substrate per liter solution.
Symbol: S
Measurement: Molar ConcentrationUnit: mol/L
Note: Value can be positive or negative.

Other Formulas to find Forward Rate Constant

​Go Forward Rate Constant in Enzymatic Reaction mechanism
kf=krESS([E0]-ES)
​Go Forward Rate Constant given Dissociation Rate Constant
kf=(krKD)

Other formulas in Rate Constants of Enzymatic Reaction category

​Go Catalytic Rate Constant at Low Substrate Concentration
kcat=V0KM[E0]S
​Go Reverse Rate Constant in Enzymatic Reaction Mechanism
kr=kfS([E0]-ES)ES
​Go Dissociation Rate Constant in Enzymatic Reaction Mechanism
KD=krkf
​Go Reverse Rate Constant given Dissociation Rate Constant
kr=(KDkf)

How to Evaluate Forward Rate Constant given Reverse and Catalytic Rate Constant?

Forward Rate Constant given Reverse and Catalytic Rate Constant evaluator uses Forward Rate Constant = (Reverse Rate Constant+Catalytic Rate Constant)*(Enzyme Substrate Complex Concentration/(Catalyst Concentration*Substrate Concentration)) to evaluate the Forward Rate Constant, The Forward rate constant given reverse and catalytic rate constant formula is defined as the relation with enzymatic catalyst and substrate concentration with an enzyme-substrate complex concentration in an enzymatic reaction mechanism. Forward Rate Constant is denoted by kf symbol.

How to evaluate Forward Rate Constant given Reverse and Catalytic Rate Constant using this online evaluator? To use this online evaluator for Forward Rate Constant given Reverse and Catalytic Rate Constant, enter Reverse Rate Constant (kr), Catalytic Rate Constant (kcat), Enzyme Substrate Complex Concentration (ES), Catalyst Concentration (E) & Substrate Concentration (S) and hit the calculate button.

FAQs on Forward Rate Constant given Reverse and Catalytic Rate Constant

What is the formula to find Forward Rate Constant given Reverse and Catalytic Rate Constant?
The formula of Forward Rate Constant given Reverse and Catalytic Rate Constant is expressed as Forward Rate Constant = (Reverse Rate Constant+Catalytic Rate Constant)*(Enzyme Substrate Complex Concentration/(Catalyst Concentration*Substrate Concentration)). Here is an example- 5.333507 = (20000+0.65)*(10000/(25000*1500)).
How to calculate Forward Rate Constant given Reverse and Catalytic Rate Constant?
With Reverse Rate Constant (kr), Catalytic Rate Constant (kcat), Enzyme Substrate Complex Concentration (ES), Catalyst Concentration (E) & Substrate Concentration (S) we can find Forward Rate Constant given Reverse and Catalytic Rate Constant using the formula - Forward Rate Constant = (Reverse Rate Constant+Catalytic Rate Constant)*(Enzyme Substrate Complex Concentration/(Catalyst Concentration*Substrate Concentration)).
What are the other ways to Calculate Forward Rate Constant?
Here are the different ways to Calculate Forward Rate Constant-
  • Forward Rate Constant=(Reverse Rate Constant*Enzyme Substrate Complex Concentration)/(Substrate Concentration*(Initial Enzyme Concentration-Enzyme Substrate Complex Concentration))OpenImg
  • Forward Rate Constant=(Reverse Rate Constant/Dissociation Rate Constant)OpenImg
Can the Forward Rate Constant given Reverse and Catalytic Rate Constant be negative?
Yes, the Forward Rate Constant given Reverse and Catalytic Rate Constant, measured in First Order Reaction Rate Constant can be negative.
Which unit is used to measure Forward Rate Constant given Reverse and Catalytic Rate Constant?
Forward Rate Constant given Reverse and Catalytic Rate Constant is usually measured using the 1 Per Second[s⁻¹] for First Order Reaction Rate Constant. 1 Per Millisecond[s⁻¹], 1 Per Day[s⁻¹], 1 Per Hour[s⁻¹] are the few other units in which Forward Rate Constant given Reverse and Catalytic Rate Constant can be measured.
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