Question

what are the units for the following: the RATE of a chemical reaction, for k in...

what are the units for the following:

the RATE of a chemical reaction, for k in a FIRST ORDER reaction, for k in a SECOND ORDER reaction, for k ZERO ORDER reaction

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Zero-Order Reaction

For a zero-order reaction, the rate of reaction is a constant. When the limiting reactant is completely consumed, the reaction abrupts stops.

Differential Rate Law: r = k

The rate constant, k, has units of mole L-1 sec-1.

First-Order Reaction

For a first-order reaction, the rate of reaction is directly proportional to the concentration of one of the reactants.

Differential Rate Law: r = k [A]

The rate constant, k, has units of sec-1.

Second-Order Reaction

For a second-order reaction, the rate of reaction is directly proportional to the square of the concentration of one of the reactants.

Differential Rate Law: r = k [A]2

The rate constant, k, has units of L mole-1 sec-1.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A chemical reaction is known to have a general rate equation of the form: Rate=k[A]n Use...
A chemical reaction is known to have a general rate equation of the form: Rate=k[A]n Use the following data to answer the two questions below. Determine the order of reactant A. Time (s) [A] mol/L 0 0.2 100 0.1570 200 0.1292 300 0.1098 400 0.0954 500 0.0844 600 0.0756 700 0.0685 800 0.0627 900 0.0577 1000 0.0535 A. First Order B. Second Order C. Zero Order D. That's an Order! Determine the rate constant k. State your answer to three...
Answer the following questions for a reaction whose rate law is: rate = k[A][B] What is...
Answer the following questions for a reaction whose rate law is: rate = k[A][B] What is the overall order of the reaction? Select one: a. first b. second c. Third If the concentration of both A and B are doubled, how will this affect the rate of reaction? Select one: a. no change b. rate increases by a factor of 2 c. rate increases by a factor of 4 d. rate increases by a factor of 8second c. third
The following is known about the reaction below: Chemical reaction: 2A-->2B The order of A is...
The following is known about the reaction below: Chemical reaction: 2A-->2B The order of A is second order If you start out with 2.75 M of A, after 5 minutes you will have 2.00M From these facts, determine: a) the rate law constant, K b) the first half life c) from time 0, how long will it take to reach 25% of the original concentration of A d) what is the concentration of A after 10 minutes?
QUESTION 9 A reaction is studied and found to proceed in the following two elementary steps:...
QUESTION 9 A reaction is studied and found to proceed in the following two elementary steps: A + B → C + Q Q + A → D + B What is the catalyst for the reaction? Q D C B A QUESTION 10 2A → B + C The above reaction is studied and found to proceed in the following two elementary steps: A → Q Q + A → B + C If the second step is the...
For the overall chemical reaction shown below, which one of the following statements can be rightly...
For the overall chemical reaction shown below, which one of the following statements can be rightly assumed? 2H2S(g) + O2(g) --> 2S(s) + 2H2O(l) A) The reaction is third order overall B) The reaction is second order overall C) The rate law is, rate = k[H2S]2 [O2]. D) The rate law is, rate = k[H2S] [O2]. E) The rate law cannot be determined from the information given.
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they...
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they resemble the equation for a straight line,y=mx+b. Order Integrated Rate Law Graph Slope 0 [A]=−kt+[A]0 [A] vs. t −k 1 ln[A]=−kt+ln[A]0 ln[A] vs. t −k 2 1[A]= kt+1[A]0 1[A] vs. t k Part A The reactant concentration in a zero-order reaction was 8.00×10−2M after 200 s and 2.50×10−2Mafter 390 s . What is the rate constant for this reaction? Express your answer with the...
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they...
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they resemble the equation for a straight line,y=mx+b. Order Integrated Rate Law Graph Slope 0 [A]=−kt+[A]0 [A] vs. t −k 1 ln[A]=−kt+ln[A]0 ln[A] vs. t −k 2 1[A]= kt+1[A]0 1[A] vs. t k Part A The reactant concentration in a zero-order reaction was 5.00×10−2M after 200 s and 2.50×10−2M after 310 s . What is the rate constant for this reaction? Express your answer with...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t1/2=0.693k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0 Part A A certain first-order reaction (A→products) has a rate constant of 4.20×10−3 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A],...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t1/2=0.693k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0 Part A A certain first-order reaction (A→products ) has a rate constant of 5.10×10−3 s−1 at 45 ∘C . How many minutes does it take for the concentration of the...
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they...
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they resemble the equation for a straight line,y=mx+b. Order Integrated Rate Law Graph Slope 0 [A]=−kt+[A]0 [A] vs. t −k 1 ln[A]=−kt+ln[A]0 ln[A] vs. t −k 2 1[A]= kt+1[A]0 1[A] vs. t k ------------ Part A The reactant concentration in a zero-order reaction was 5.00×10−2M after 110 s and 4.00×10−2M after 375 s . What is the rate constant for this reaction? ---------- Part B...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT