I know the answer is A, but I want to know why and how you would...
I know the answer is A, but I want to know why and how you would figure out this question....
which acid has the lowest pKa? a) HClO4 b)HBrO c) HClO d) HlO
Homework Answers
pKa is a measure of acidity of organic acids.
pKa=-logKa
![[hr® [BP HB] pKa =-log Ka](http://img.homeworklib.com/questions/c01d4d90-c0ab-11eb-bb39-bbc24b612e9a.jpg?x-oss-process=image/resize,w_560)
More is the acid stronger, more it dissociates, and more is the Ka value, consequently lower the pKa value. So acid with lowest pKa values are the strongest.
The acidity depends upon a lot of factors. One of the most important factor is how stable the conjugate base B- is. If base is stable, then more dissociation takes place.
The stability of base in turn depends upon a lot of factors like stability of negative charge after removal of H+, electronegativity of atom. The mkre the electronegativity of the atom, more easily it can bear the negative charge, more stable it is. As Cl is more electronegative than Br and I, so we can cancel option b and d.
Out of a and c, conjugate ClO4- is more stable than ClO- as it has more number of electronegative oxygen atoms which can stabilise the negative charge via resonance.
So (a) is the strongest acid and has lowest pKa.
hi i know the answer i just need an in depth explanation on how to do...
hi i know the answer i just need an in depth explanation on how to do this question including formulas, formula changes, proper vocabular etc, anyhing that is relevant to this question inncluding ice charts, etc please make sure this explanation is simple and not too complex to understand, thank you, the question is: Hypobromous acid, HBrO, is a weak acid with K a = 2.5 x 10 -9. What is the pH of a 0.200 mol/L solution of HBrO?
i know the answer is B, but I need to see the work how to get...
i know the answer is B, but I
need to see the work how to get it
What mole ratio of benzoic acid (C6H5COOH, pKa = 4.20) to sodium benzoate would buffer a solution at pH = 4.00? a. 11.2:1 b. 1.6:1 C. 0.63:1 d. 1.05 : 1
Please show all work as needed and provide correct multiple choice answer. Thanks 5. You are...
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
i know the answer but i dont know how to get it 10. How many milliliters...
i know the answer but i dont know how to get it
10. How many milliliters of 10.0 M HNO3 solution must be added to a LOL buffer system that is 0.001 M acetic acid (HC2H302) and 0.1 M sodium acetate (NaC2H302) to bring the pH to 5.452 The pka of acetic acid is 4.75 a. 1.58 ml d. 2.99 mL b. 3.92 mL e. It is impossible to tell from the given information c. 25.00 mL
How would we work this out? I know the answer is 4.89 44) In the titration...
How would we work this out? I
know the answer is 4.89
44) In the titration of 10.00mL of a 0.15M acetic acid solution (Ka 1.8 x 10-5) with 0.25M sodium hydroxide, what is the pH after 3.50 mL of the base has been added? a) 4.59 b) 4.69 c) 4.79 d) 4.89 e) 4.99
Hi, for the first question, I would like to know why the CN group and Methyl...
Hi, for the first question, I would like to know why the CN
group and Methyl group are both pointing out of the plane? How do I
look in order to be able to get the same answer? For the second
question, how do I know which one will point out of the plane and
which one will go into the plane?
WHAT OTHER INFO DO U NEED ALL INFO HAVE BEEN PROVIDED
Found the answer online (C) but I want to know how to reach there. Please show...
Found the answer online (C) but I want to know how to
reach there. Please show the steps and explain them if possible,
thank you!
A27. What would be the product from reacting 1-methylcyclopent-1-ene with ozone followed by reaction with zinc? ОН OH OH OH | 合行合 CHO COOH (A) (B) (C) (D) (E)
NOTE: I know the answer to this problem is 13.0 but I am unsure how to...
NOTE: I know the answer to this problem is 13.0 but I am unsure how to get the answer. A weak acid has a pKa of 7.3. 30 mL of 1.0 M NaOH is added to 100 mL of a 1.0 M buffer of this acid at pH 8.0. The resulting solution is at pH:
the answer options are constructive or destructive but I would like to know why and if...
the answer options are constructive or destructive but I would
like to know why and if I have to do work/calculations to figure
that out
There are two speakers at the front of the room. Each is outputting a 250Hz pure tone. For each of the following situations, will you hear constructive interference (a loud nolse) or destructive nterference (soft or no noise). A represents the wavelength of the 250Hz tone. You are 3A away from speaker A; 4A away...
I want to know the answer of these question and why this is not correct. Incorrect...
I want to know the answer of these question and why this is not
correct.
Incorrect Question 9 0/0.5 pts Market equilibrium occurs when: the market clears. there is no incentive for prices to change in the market, quantity demanded equals quantity supplied, and the market clears. there is no incentive for prices to change in the market. O quantity demanded equals quantity supplied. Incorrect Question 36 0/0.5 pts Which factor will NOT cause an increase in demand for good...
i know the answer is B, but I
need to see the work how to get it
What mole ratio of benzoic acid (C6H5COOH, pKa = 4.20) to sodium benzoate would buffer a solution at pH = 4.00? a. 11.2:1 b. 1.6:1 C. 0.63:1 d. 1.05 : 1
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
i know the answer but i dont know how to get it
10. How many milliliters of 10.0 M HNO3 solution must be added to a LOL buffer system that is 0.001 M acetic acid (HC2H302) and 0.1 M sodium acetate (NaC2H302) to bring the pH to 5.452 The pka of acetic acid is 4.75 a. 1.58 ml d. 2.99 mL b. 3.92 mL e. It is impossible to tell from the given information c. 25.00 mL
How would we work this out? I
know the answer is 4.89
44) In the titration of 10.00mL of a 0.15M acetic acid solution (Ka 1.8 x 10-5) with 0.25M sodium hydroxide, what is the pH after 3.50 mL of the base has been added? a) 4.59 b) 4.69 c) 4.79 d) 4.89 e) 4.99
Hi, for the first question, I would like to know why the CN
group and Methyl group are both pointing out of the plane? How do I
look in order to be able to get the same answer? For the second
question, how do I know which one will point out of the plane and
which one will go into the plane?
WHAT OTHER INFO DO U NEED ALL INFO HAVE BEEN PROVIDED
Found the answer online (C) but I want to know how to
reach there. Please show the steps and explain them if possible,
thank you!
A27. What would be the product from reacting 1-methylcyclopent-1-ene with ozone followed by reaction with zinc? ОН OH OH OH | 合行合 CHO COOH (A) (B) (C) (D) (E)
the answer options are constructive or destructive but I would
like to know why and if I have to do work/calculations to figure
that out
There are two speakers at the front of the room. Each is outputting a 250Hz pure tone. For each of the following situations, will you hear constructive interference (a loud nolse) or destructive nterference (soft or no noise). A represents the wavelength of the 250Hz tone. You are 3A away from speaker A; 4A away...
I want to know the answer of these question and why this is not
correct.
Incorrect Question 9 0/0.5 pts Market equilibrium occurs when: the market clears. there is no incentive for prices to change in the market, quantity demanded equals quantity supplied, and the market clears. there is no incentive for prices to change in the market. O quantity demanded equals quantity supplied. Incorrect Question 36 0/0.5 pts Which factor will NOT cause an increase in demand for good...
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