Question

Part A What is the average reaction rate between 0. and 1500. s ? Express your...

Part A

What is the average reaction rate between 0. and 1500. s ?

Express your answer to three significant figures and include the appropriate units

Part B

What is the average reaction rate between 500. and 1200. s ?

Express your answer to three significant figures and include the appropriate units.

Part C

What is the instantaneous rate of the reaction at t=800. s ?

Express your answer to two significant figures and include the appropriate units

Average and Instantaneous Reaction Rates

An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the course of the reaction. An instantaneous reaction rate is the rate at a particular moment in the reaction and is usually determined graphically.

The reaction of compound A forming compound B was studied and the following data were collected:

Time (s ) [A] (M )
0. 0.184
200. 0.129
500. 0.069
800. 0.031
1200. 0.019
1500. 0.016

Homework Answers

Answer #1

Average rate of reaction is defined as the change in concentration of reactant or product in given time interval t.

Rav= (change in concentration / time interval)

= (0.016 - 0.184)/(1500-0) = (-0.000112) Mol /LS

Average rate = -0.112×10-3 Mol/LS

Negative sign indicates that decrease in concentration of reactant A with time t.

(B) average rate of reaction

Rav= (0.019-0.069)/(1200-500)

= (-7.142×10-5 )Mol/LS

Negative sign indicate that concentration of reactant is decreasing.

(C)

Instantaneous rate of reaction = (concentration of A/ instantaneous time)

= (0.031/800)= 3.87× 10-5 Mol/LS

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What is the instantaneous rate of the reaction at t=800. s? Time (s) [A] (M) 0....
What is the instantaneous rate of the reaction at t=800. s? Time (s) [A] (M) 0. 0.184 200. 0.129 500. 0.069 800. 0.031 1200. 0.019 1500. 0.016
*Average and instantaneous reaction rates The reaction of compound A forming compound Bwas studied and the...
*Average and instantaneous reaction rates The reaction of compound A forming compound Bwas studied and the following data were collected: Time (s) [A] (M) 0. 0.184 200. 0.129 500. 0.069 800. 0.031 1200. 0.019 1500. 0.016 Part A What is the average reaction rate between 0. and 1500. s? Part B What is the average reaction rate between 200. and 1200. s ? Part C What is the instantaneous rate of the reaction at t=800. s?
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.20 M and [Mg2+]= 0.110 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 69 ∘C , where [Fe2+]= 3.20 M and [Mg2+]= 0.110 M . Part A:What is the value for the reaction quotient, Q, for the cell? Express your answer numerically. Part B:What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. Part C:What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles)....
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 M . Part A What is the value for the reaction quotient, Q, for the cell? Part B What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. Part C What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles). Part...
Question 11 Part A) What is the stress within the girder? Express your answer to two...
Question 11 Part A) What is the stress within the girder? Express your answer to two significant figures and include the appropriate units. stress Part B) A sign (mass 2400 kg ) hangs from the end of a vertical steel girder with a cross-sectional area of 0.013 m2 . Ignore the mass of the girder itself. The elastic modulus for steel is 2.0×1011N/m2. What is the strain on the girder? Express your answer to two significant figures. strain =   Part...
An 80-ft-diameter Ferris wheel rotates once every 26 s . Part A What is the apparent...
An 80-ft-diameter Ferris wheel rotates once every 26 s . Part A What is the apparent weight of a 66 kg passenger at the lowest point of the circle? Express your answer in SI units. Express your answer to two significant figures and include the appropriate units. Part B What is the apparent weight of a 66 kg passenger at the highest point of the circle? Express your answer in SI units. Express your answer to two significant figures and...
Nitrosyl bromide, NOBr, is formed in the reaction of nitric oxide, NO, with bromine, Br2: 2NO(g)+Br2(g)⇌2NOBr(g)...
Nitrosyl bromide, NOBr, is formed in the reaction of nitric oxide, NO, with bromine, Br2: 2NO(g)+Br2(g)⇌2NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed. Part A At a certain temperature the initial concentration of NO was 0.400 M and that of Br2 was 0.255 M . At equilibrium the concentration of NOBr was found to be 0.250 M. What is the value of Kc at this temperature? Kc = 21.4 PART B At this temperature the rate constant...
A -14 nC charge is located at (x, y) = (1.4 cm , 0 cm). Part...
A -14 nC charge is located at (x, y) = (1.4 cm , 0 cm). Part B What is the y-component of the electric field at the position (x, y) = (5.9 cm , 0 cm)? Express your answer to two significant figures and include the appropriate units. Part D What is the y-component of the electric field at the position (x, y) = (?5.9cm, 0 cm)? Express your answer to two significant figures and include the appropriate units. Part...
Consider the following hypothetical aqueous reaction: A(aq)→B(aq). A flask is charged with 0.065 mol of A...
Consider the following hypothetical aqueous reaction: A(aq)→B(aq). A flask is charged with 0.065 mol of A in a total volume of 100.0 mL. The following data are collected: Time (min) 0 10 20 30 40 Moles of A 0.065 0.051 0.042 0.036 0.031 Part A Calculate the average rate of disappearance of A between t= 30 min and t= 40 min, in units of M/s. Express your answer using two significant figures. Part B Between t= 10 min and t=...
1) Elemental S reacts with O2 to form SO3 according to the reaction 2S+3O2→2SO3 A) How...
1) Elemental S reacts with O2 to form SO3 according to the reaction 2S+3O2→2SO3 A) How many O2 molecules are needed to react with 3.25 g of S? B) What is the theoretical yield of SO3 produced by the quantities described in Part A? 2) 1.05 g H2 is allowed to react with 9.71 g N2, producing 1.15 g NH3. A) What is the theoretical yield in grams for this reaction under the given conditions? Express your answer to three...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT