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Half Life of Second Order Reaction Formula

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Half Life of Second Order Reactions the time at which the concentration becomes half. Check FAQs

T 1/2 = \frac{1}{C A} \cdot K second

T_1/2 - Half Life of Second Order Reaction?C_A - Reactant Concentration?K_second - Rate Constant for Second Order Reaction?

Half Life of Second Order Reaction Example

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Here is how the Half Life of Second Order Reaction equation looks like with Values.

Here is how the Half Life of Second Order Reaction equation looks like with Units.

Here is how the Half Life of Second Order Reaction equation looks like.

5.1E-6 = \frac{1}{0.1} \cdot 0.51

5.1E-6s = \frac{1}{0.1mol/L} \cdot 0.51L/(mol*s)

5.1E-6 = \frac{1}{0.1} \cdot 0.51

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Half Life of Second Order Reaction Solution

Follow our step by step solution on how to calculate Half Life of Second Order Reaction?

FIRST Step Consider the formula

T 1/2 = \frac{1}{C A} \cdot K second

Next Step Substitute values of Variables

∴

T 1/2 = \frac{1}{0.1mol/L} \cdot 0.51L/(mol*s)

Next Step Convert Units

∴

T 1/2 = \frac{1}{100mol/m³} \cdot 0.0005m³/(mol*s)

Next Step Prepare to Evaluate

∴

T 1/2 = \frac{1}{100} \cdot 0.0005

Next Step Evaluate

∴

T 1/2 = 5.1E-06s

LAST Step Rounding Answer

∴

T 1/2 = 5.1E-6s

Half Life of Second Order Reaction Formula Elements

Variables

Half Life of Second Order Reaction

Half Life of Second Order Reactions the time at which the concentration becomes half.

Symbol: T_1/2

Measurement: TimeUnit: s

Note: Value should be between 0 to 2330.

Formulas to find Half Life of Second Order Reaction

Reactant Concentration

The Reactant Concentration refers to the amount of reactant present in the solvent at any given point of time during the process.

Symbol: C_A

Measurement: Molar ConcentrationUnit: mol/L

Note: Value should be greater than 0.

Formulas to find Reactant Concentration

Rate Constant for Second Order Reaction

The Rate Constant for Second Order Reaction is defined as the average rate of the reaction per concentration of the reactant having power raised to 2.

Symbol: K_second

Measurement: Second Order Reaction Rate ConstantUnit: L/(mol*s)

Note: Value can be positive or negative.

Formulas to find Rate Constant for Second Order Reaction

Other formulas in Second Order Reaction category

Go Rate Constant for Same Product for Second Order Reaction

K second = \frac{1}{ax t \cdot t completion} - \frac{1}{a \cdot t completion}

Go Time of Completion for Same product for Second Order Reaction

t completion = \frac{1}{ax t \cdot K second} - \frac{1}{a \cdot K second}

Go Rate Constant for different Products for Second Order Reaction

K first = \frac{2.303}{t completion \cdot (C AO - C BO)} \cdot \log 10 \frac{C BO \cdot (ax)}{C AO \cdot (bx)}

Go Time of Completion for different Products for Second Order Reaction

t completion = \frac{2.303}{K second \cdot (C AO - C BO)} \cdot \log 10 \frac{C BO \cdot (ax)}{C AO \cdot (bx)}

How to Evaluate Half Life of Second Order Reaction?

Half Life of Second Order Reaction evaluator uses Half Life of Second Order Reaction = 1/Reactant Concentration*Rate Constant for Second Order Reaction to evaluate the Half Life of Second Order Reaction, Half life of second order reaction formula is defined as the time when the concentration of initial reactant in second order becomes half. Half Life of Second Order Reaction is denoted by T_1/2 symbol.

How to evaluate Half Life of Second Order Reaction using this online evaluator? To use this online evaluator for Half Life of Second Order Reaction, enter Reactant Concentration (C_A) & Rate Constant for Second Order Reaction (K_second) and hit the calculate button.

FAQs on Half Life of Second Order Reaction

What is the formula to find Half Life of Second Order Reaction?

The formula of Half Life of Second Order Reaction is expressed as Half Life of Second Order Reaction = 1/Reactant Concentration*Rate Constant for Second Order Reaction. Here is an example- 3.6E-5 = 1/100*0.00051.

How to calculate Half Life of Second Order Reaction?

With Reactant Concentration (C_A) & Rate Constant for Second Order Reaction (K_second) we can find Half Life of Second Order Reaction using the formula - Half Life of Second Order Reaction = 1/Reactant Concentration*Rate Constant for Second Order Reaction.

Can the Half Life of Second Order Reaction be negative?

No, the Half Life of Second Order Reaction, measured in Time cannot be negative.

Which unit is used to measure Half Life of Second Order Reaction?

Half Life of Second Order Reaction is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Half Life of Second Order Reaction can be measured.

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