Homework Answers
22.Ans:- Option (A) " 0.40 " is the correct answer.
Explanation :-
Given base dissociation constant (Kb) of CH3NH2 = 4.4 x 10-4
pKb CH3NH2 = - log Kb
= - log 4.4 x 10-4
= 3.36
Given, pH = 10.24
Using Henderson-Hasselbalch equation :
pOH = pKb + log [Salt] / [Base]
Because ,
pH + pOH = 14
pOH = 14 - pH
So,
14 - pH = 3.36 + log [CH3NH3Cl] / [CH3NH2]
14 - 10.24 = 3.36 + log [CH3NH3Cl] / [CH3NH2]
3.76 = 3.36 + log [CH3NH3Cl] / [CH3NH2]
log [CH3NH3Cl] / [CH3NH2] = 3.76 - 3.36
log [CH3NH3Cl] / [CH3NH2] = 0.40
[CH3NH3Cl] / [CH3NH2] = 100.40
[CH3NH3Cl] / [CH3NH2] = 2.51
Reciprocal on both the sides
[CH3NH2] / [CH3NH3Cl] = 1/2.51
[CH3NH2] / [CH3NH3Cl] = 0.40
| Hence, ratio of CH3NH2 to CH3NH3Cl = 0.40 |
So, option (A) is the correct answer.
Add Answer to:
> Click Submit to complete this assessment. Question 22 Calculate the ratio of CH3NH2 to CH3NH3Cl...
Question 7 of 9 How many moles of CH3NH3Cl need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb for CH3NH2...
Question 7 of 9 How many moles of CH3NH3Cl need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb for CH3NH2 is 4.4 * 10-4) to make a buffer with a pH of 11.60? mol C +/- 0 x 100
Question Complédon Status > Click Submit to complete this assessment. Question 2 A shaft, 49 mm...
Question Complédon Status > Click Submit to complete this assessment. Question 2 A shaft, 49 mm in diameter, is made of steel Syt - 563 MPa. It is subjected to Bending Moment 1,807 N-m and steady Torsional Moment of 195 N-m. Calculate the factor of Safety based on Maximum Shear Stress theory > Click Submit to complete this assessment.
> Click Submit to complete this assessment. Question 42 The Zero - Law of Thermodynamics states...
> Click Submit to complete this assessment. Question 42 The Zero - Law of Thermodynamics states the energy is conserved in chemical processes. First Second Third Fourth Submit to complete this occacement
Remaining Time: 21 minutes, 22 seconds. Question Completion Status: > Click Submit to complete this assessment...
Remaining Time: 21 minutes, 22 seconds. Question Completion Status: > Click Submit to complete this assessment Question 50 The purpose of a shear wall, is to prevent the wood framing from racking due to Dead loads Live loads Lateral loads Snow loads Click Submit to complete this assessment Type here to search O
> Click Submit to complete this assessment. Question 22 Given the following equation and equilibrium constant,...
> Click Submit to complete this assessment. Question 22 Given the following equation and equilibrium constant, 2 H2(g) + S2(o)=2 H2S(g) Ke=1.08 x 107 Determine Ke for the following reaction. H25(9) =Hz()+ 526) 2.70 x 106 1.35 X 106 3.04 x 10-4 2.31 x 10-8
--> Click Submit to complete this assessment. Question 9 You draw a value "x" from N(3,3)....
--> Click Submit to complete this assessment. Question 9 You draw a value "x" from N(3,3). x = 4.6 What is the probability of getting a value lower than this? A Click Submit to complete this assessment
Question Completion Status > Click Submit to complete this assessment Question estions 10 points How much...
Question Completion Status > Click Submit to complete this assessment Question estions 10 points How much will there be in an account at the end of 9 years if an amount of AED 28,000 is deposited and the interest is 5% per year compounded semi-annually (10 marks) Activate Windows TT T Arial 312pt) Go to Settings to do RI (Ps ded INS F1 SOLO DEL 8 1 9 34 9 BACK SPACE
-> Click Submit to complete this assessment. Save and Sub Question 10 Question 10 of Dudley...
-> Click Submit to complete this assessment. Save and Sub Question 10 Question 10 of Dudley North argued that international trade could be mutually beneficial it A manufacturers in each country competed on a level playing field. 1 points Save OB each country was politically independent and not a colony of another country oC all the answers are carrect D. each country exported goods they had a surplus of and imported goods that were scarce E. each nation specialized in...
> A Click Submit to complete this assessment Question 20 li no forensic investigators are available...
> A Click Submit to complete this assessment Question 20 li no forensic investigators are available within the company other sources are The external auditing firm Registered independent accounting and auditing firms Consulting firms All of the above Click Submit to complete this assessment
s Question Completion Status > Click Submit to complete this assessment. Question 10 Prior onditional vent...
s Question Completion Status > Click Submit to complete this assessment. Question 10 Prior onditional vent Probability robability 25 31 For the Excel worksheet above, which of the following formulas would corectly calculate the joint probability for B3-C3 B3/C3 83 C3 à Click Submit to complete this assessment arch
Question 7 of 9 How many moles of CH3NH3Cl need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb for CH3NH2 is 4.4 * 10-4) to make a buffer with a pH of 11.60? mol C +/- 0 x 100
Question Complédon Status > Click Submit to complete this assessment. Question 2 A shaft, 49 mm in diameter, is made of steel Syt - 563 MPa. It is subjected to Bending Moment 1,807 N-m and steady Torsional Moment of 195 N-m. Calculate the factor of Safety based on Maximum Shear Stress theory > Click Submit to complete this assessment.
> Click Submit to complete this assessment. Question 42 The Zero - Law of Thermodynamics states the energy is conserved in chemical processes. First Second Third Fourth Submit to complete this occacement
Remaining Time: 21 minutes, 22 seconds. Question Completion Status: > Click Submit to complete this assessment Question 50 The purpose of a shear wall, is to prevent the wood framing from racking due to Dead loads Live loads Lateral loads Snow loads Click Submit to complete this assessment Type here to search O
> Click Submit to complete this assessment. Question 22 Given the following equation and equilibrium constant, 2 H2(g) + S2(o)=2 H2S(g) Ke=1.08 x 107 Determine Ke for the following reaction. H25(9) =Hz()+ 526) 2.70 x 106 1.35 X 106 3.04 x 10-4 2.31 x 10-8
--> Click Submit to complete this assessment. Question 9 You draw a value "x" from N(3,3). x = 4.6 What is the probability of getting a value lower than this? A Click Submit to complete this assessment
Question Completion Status > Click Submit to complete this assessment Question estions 10 points How much will there be in an account at the end of 9 years if an amount of AED 28,000 is deposited and the interest is 5% per year compounded semi-annually (10 marks) Activate Windows TT T Arial 312pt) Go to Settings to do RI (Ps ded INS F1 SOLO DEL 8 1 9 34 9 BACK SPACE
-> Click Submit to complete this assessment. Save and Sub Question 10 Question 10 of Dudley North argued that international trade could be mutually beneficial it A manufacturers in each country competed on a level playing field. 1 points Save OB each country was politically independent and not a colony of another country oC all the answers are carrect D. each country exported goods they had a surplus of and imported goods that were scarce E. each nation specialized in...
> A Click Submit to complete this assessment Question 20 li no forensic investigators are available within the company other sources are The external auditing firm Registered independent accounting and auditing firms Consulting firms All of the above Click Submit to complete this assessment
s Question Completion Status > Click Submit to complete this assessment. Question 10 Prior onditional vent Probability robability 25 31 For the Excel worksheet above, which of the following formulas would corectly calculate the joint probability for B3-C3 B3/C3 83 C3 à Click Submit to complete this assessment arch
Most questions answered within 3 hours.
-
Do you think that anyone requesting a sex change operation
should be entitled to receive one...
asked 17 seconds ago -
A firm is considering the purchase of a machine which would
represent an investment of $23...
asked 1 minute ago -
Flower colour in a plant species is determined by two genes,
gene B and gene P....
asked 4 minutes ago -
findWordCrossIndex(horizontalWord, verticalWord) This function
finds and returns the index in the string "horizontalWord" of the
first...
asked 7 minutes ago -
evaluate the statements below and select those that correctly apply
to the role of PAMPs and...
asked 14 minutes ago -
Congratulations! You have just won the Lottery. The Lottery
Commission informs you that you can choose...
asked 19 minutes ago -
bulk flow (in respiration) moves blood from?
Air in and out of lungs?
air into lungs?...
asked 24 minutes ago -
Which of the following describes a private network?
1. A wide area network (WAN) linking sites...
asked 38 minutes ago -
The purpose of this
lab: Wireshark Intro Lab
is to get students
familiar with the use of...
asked 47 minutes ago -
Question 3
A 50 percent deduction is allowed for amounts paid or incurred for
dues and...
asked 45 minutes ago -
Assuming that the wave speed varies little when sound waves are
traveling through a material that...
asked 1 hour ago -
The rise of online shopping and Amazon, in particular, has
created major dilemmas for large food/CPG...
asked 1 hour ago