Homework Answers
No
The encircled hydrogen attached to the carbonyl carbon in an aldehyde or ketone is far more acidic than a hydrogen of an alkane.
This is because of the greater stability of the conjugate base for the first. If there is deprotonation, the negative charge over the carbon in the conjugate base resides on an sp2 hybrid carbon for the carbonyl compound and an sp3 hybrid carbon for an alkane.
An sp2 carbon has more s character than an sp3 hybridized carbon. A greater s character directly relates to lower energy and more stability.
The more stable is the conjugate base, more acidic is the original compound.
Greater acidity means lower pkavalue. So, the single hydrogen attached to a carbonyl group has much less pka(for example methane has a value around 13) than that of an alkane which has a value around 50.
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would the single hydrogen attatched to a carbonyl (like aldehyde)
just have a pKa around 50...
NAME! Select the best answer and bubble it in on your blue scantron. 1. Where would...
NAME! Select the best answer and bubble it in on your blue scantron. 1. Where would be the absorption peak of a carbonyl, C-0, stretching in IR? a) around 3300 cm b) around 2980 cm" c) around 1700 cm d) around 1200 cm 2. What is the Grignard reagent in nucleophilic addition reaction considered? a) b) 0 c) H d) all the above 3. What a cynaohydrin contains? a) CN and NH. b) N, and OH. c) CN and OH....
Which of the following acids, whose pKa values are given next to them, would have the...
Which of the following acids, whose pKa values are given next to them, would have the strongest conjugate base? pKa a) H2SO4 b) CH3COOH 4.8 c) HS 12.9 d) NH* 2.0 9.2 Reaction of a carboxylic acid with an alcohol produces: a) an alkane b) an ester c) a ketone d) an amide During the neutralisation of a weak acid by a strong base the pH of the solution equals the pKa of the acid: a) at the beginning of...
I would like all of them answered first 4 are True 1. True and False Question...
I would like all of them answered
first 4 are True
1. True and False Question (1) Carbonyl compounds have higher boiling points than hydrocarbons, but lower boiling points than corresponding alcohols. (2) Aldehydes and ketones react with primary amines to form imines and with secondary amines to form enamines. (3) Aldehydes and ketones can be oxidized to carboxylic acids. (4) Diols can form acetal with the ketone or aldehyde to protect them for selective reduction of the ester (5)...
just do the circle number only Applications 5.91 Would behave more like an ideal gas at...
just do the circle number only
Applications 5.91 Would behave more like an ideal gas at 5 Kor 50 K? Explain your reasoning 5.92 Would CO behave more like an ideal gas at 2 atm or 20 atm? Explain your reasoning. The Liquid State Foundations 5.93 Compare the strength of intermolecular forces in liquids with those in gases 5.94 Compare the strength of intermolecular forces in liquids with those in solids. What is the relationship between the temperature of a...
22) Maria would like to make a single investment and have $1 million at the time...
22) Maria would like to make a single investment and have $1 million at the time of her retirement in 20 years. She has found a mutual fund that will earn 6 percent annually. How much will Maria have to invest today? (6p)
I would like to have a full answer with explanation for every single part of the...
I would like to have a full answer with explanation for every
single part of the question please
Question 1 (Unit 12) - 16 marks Consider the pair of differential equations der = y - 2, % = 22 – 12. (a) Find all the equilibrium points of these equations. (b) Classify each equilibrium point of this non-linear system as far as possible by considering the Jacobian matrix. [12]
I would like to have a full answer with explanation please for every single part of...
I
would like to have a full answer with explanation please for every
single part of the question
Question 3 (Unit 4) - 5 marks Consider the matrix ( 01-21 A= 3 1 2 21-4/ (a) Calculate the determinant of A. (b) State whether A has an inverse. Briefly justify your answer.
Q:2 Sarah would like to make a single investment and have $2,000,000 at the time of...
Q:2 Sarah would like to make a single investment and have $2,000,000 at the time of her retirement in 35 years. She has found a mutual fund that will earn 4% annually. How much will Sarah have to invest today? If Annual Percentage Rate (APR) is 10%, calculate the effective Annual Rate (EAR) when interest rate is compounded i. Monthly ii. Continuously (4+4 = 8 marks)
Sarah Wiggum would like to make a single investment and have $1.8 million at the time...
Sarah Wiggum would like to make a single investment and have $1.8 million at the time of her retirement in 35years. She has found a mutual fund that will earn 7 percent annually. How much will Sarah have to invest today? If Sarah earned an annual return of 14 percent, how soon could she then retire? a. If Sarah can earn 7 percent annually for the next 35 years, the amount of money she will have to invest today is...
Sarah Wiggum would like to make a single investment and have $2.7 million at the time...
Sarah Wiggum would like to make a single investment and have $2.7 million at the time of her retirement in 25 years. She has found a mutual fund that will earn 6 percent annually. How much will Sarah have to invest today? If Sarah invests that amount and could earn a 14 percent annual return, how soon could she retire, assuming she is still going to retire when she has $2.7 million?
NAME! Select the best answer and bubble it in on your blue scantron. 1. Where would be the absorption peak of a carbonyl, C-0, stretching in IR? a) around 3300 cm b) around 2980 cm" c) around 1700 cm d) around 1200 cm 2. What is the Grignard reagent in nucleophilic addition reaction considered? a) b) 0 c) H d) all the above 3. What a cynaohydrin contains? a) CN and NH. b) N, and OH. c) CN and OH....
Which of the following acids, whose pKa values are given next to them, would have the strongest conjugate base? pKa a) H2SO4 b) CH3COOH 4.8 c) HS 12.9 d) NH* 2.0 9.2 Reaction of a carboxylic acid with an alcohol produces: a) an alkane b) an ester c) a ketone d) an amide During the neutralisation of a weak acid by a strong base the pH of the solution equals the pKa of the acid: a) at the beginning of...
I would like all of them answered
first 4 are True
1. True and False Question (1) Carbonyl compounds have higher boiling points than hydrocarbons, but lower boiling points than corresponding alcohols. (2) Aldehydes and ketones react with primary amines to form imines and with secondary amines to form enamines. (3) Aldehydes and ketones can be oxidized to carboxylic acids. (4) Diols can form acetal with the ketone or aldehyde to protect them for selective reduction of the ester (5)...
just do the circle number only
Applications 5.91 Would behave more like an ideal gas at 5 Kor 50 K? Explain your reasoning 5.92 Would CO behave more like an ideal gas at 2 atm or 20 atm? Explain your reasoning. The Liquid State Foundations 5.93 Compare the strength of intermolecular forces in liquids with those in gases 5.94 Compare the strength of intermolecular forces in liquids with those in solids. What is the relationship between the temperature of a...
22) Maria would like to make a single investment and have $1 million at the time of her retirement in 20 years. She has found a mutual fund that will earn 6 percent annually. How much will Maria have to invest today? (6p)
I would like to have a full answer with explanation for every
single part of the question please
Question 1 (Unit 12) - 16 marks Consider the pair of differential equations der = y - 2, % = 22 – 12. (a) Find all the equilibrium points of these equations. (b) Classify each equilibrium point of this non-linear system as far as possible by considering the Jacobian matrix. [12]
I
would like to have a full answer with explanation please for every
single part of the question
Question 3 (Unit 4) - 5 marks Consider the matrix ( 01-21 A= 3 1 2 21-4/ (a) Calculate the determinant of A. (b) State whether A has an inverse. Briefly justify your answer.
Q:2 Sarah would like to make a single investment and have $2,000,000 at the time of her retirement in 35 years. She has found a mutual fund that will earn 4% annually. How much will Sarah have to invest today? If Annual Percentage Rate (APR) is 10%, calculate the effective Annual Rate (EAR) when interest rate is compounded i. Monthly ii. Continuously (4+4 = 8 marks)
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