Homework Answers
Kb is dissociation constant of base.
Greater value of Kb implies stronger is the base.
Order of Kb from largest to smallest is:
Ethylamine
Methylamine
ammonia
Pyridine
Same will be the order of base
Answer:
Ethylamine
Methylamine
ammonia
Pyridine
Add Answer to:
The table shows four bases and their base dissociation constants. Kh Base ammonia ethylamine methylamine pyridine...
Consider the following table: Name Formula Conjugate Acid Ammonia NH3 ΝΗ, Methylamine CH3NH2 CH, NH3 +...
Consider the following table: Name Formula Conjugate Acid Ammonia NH3 ΝΗ, Methylamine CH3NH2 CH, NH3 + Ethylamine C2H5NH2 C,HNH3 Aniline CH NH2 CH3NH, Pyridinem CH N CH NH Kb 1.8 x 10-5 4.38 x 10-4 5.6 x 10-4 3.8 x 10-10 1.7 x 10-9 Which base would be the best choice for preparing a pH = 9.50 buffer? methylamine pyridine ethylamine aniline ammonia
Using the Base Dissociation Constants table, order the following bases from strongest to weakest. (Use the...
Using the Base Dissociation Constants table, order the following bases from strongest to weakest. (Use the appropriate <, =, or > symbol to separate substances in the list.) H2O, CH3NH2, ClO4−, and H2NNH2
Using the Base Dissociation Constants table, order the following bases from strongest to weakest. (Use the...
Using the Base Dissociation Constants table, order the following bases from strongest to weakest. (Use the appropriate <, =, or > symbol to separate substances in the list.) C2H5NH2, H2O, CH3NH2, and HSO4−
Use acid-dissociation constants in Table 16.3 to arrange the oxyanions from strongest to weakest base: SO42-,...
Use acid-dissociation constants in Table 16.3 to arrange the oxyanions from strongest to weakest base: SO42-, CO32-, SO32-, and PO43-.
(8 pts) Comparing dissociation constants, circle the strongest base in the following pairs. You must justify...
(8 pts) Comparing dissociation constants, circle the strongest base in the following pairs. You must justify your reasoning and show any calculations to receive credit. 5. Circle the strongest base in the pair: A. CsHsN and NHs and (pyridine and ammonia bases) Justification: B. PO. and AsO. and (phosphate and arsenate) Justification: 6. (10 pts) Calculate Ka of a weak acid given that a 2.3 M HA solution has a pH of 1.55. Ka: 7, (10 pts) Calculate the pH...
The following shows a list of weak acids and bases with their Ka and Kb values....
The following shows a list of weak acids and bases with their Ka and Kb values. Substances Ka Substances Kb Cyanic acid (HCN) 4.9 x 10-10 Ammonia (NH3) 1.8 x 10-5 Nitrous acid (HNO2) 4.5 x 10-4 Aniline (C6H5NH2) 4.3 x 10-10 Hydrofluoric acid (HF) 6.8 x 10-4 Pyridine (C5H5N) 1.7 x 10-9 Acetic acid (CH3COOH) 1.8 x 10-5 Methylamine (CH3NH2) 4.4 x 10-4 If you want to make a pH 8.0 buffer solution, which of the following acids or...
Conjugate Name Formula Kb Question3 Acid NH4 CH3NH,+ 4.38 x 104 Question 4 Ammonia NH3 1.8...
Conjugate Name Formula Kb Question3 Acid NH4 CH3NH,+ 4.38 x 104 Question 4 Ammonia NH3 1.8 x 10-5 Methylamine CHNH2 Question 5 1 pt C2HsNH2 C2H, NH 5.6 x 104 hylamine Aniline Pyridine Question6 CoH, NH2C6H,NH3+ 3.8 x 1010 Question 7 CsHsNH+ 1.7 x 109 Question 8 1 pt Which base would be the best choice for preparing a pH- 9.50 Question 9 buffer? O aniline O ammonia Oethylamine Question 10 Question 11 1 pt pyridine Omethylamine
6. What is the pH of 1 x 10 M HC1? a. 6.00 b. 6.98 C....
6. What is the pH of 1 x 10 M HC1? a. 6.00 b. 6.98 C. 7.98 d. 8.00 e. need K 7. What is the pH of 2.7 M Ba(OH)2? a. pH--0.726 b. pH 0.425 c. pH 5.32 d. pH 13.27 e. pH 14.73 After completing the following unfinished Base lonization table, what is the order of increasing base strength? 8. Base рк, Bicarbonate ion, HCO3 Pyridine, C$HsN Acetate ion, CH3COO 2.2 x 10-8 8.77 5.7 x 10-10 a....
ACIDS AND BASES = Predicting the que base properties of salts Consider the following data on...
ACIDS AND BASES = Predicting the que base properties of salts Consider the following data on some weak acids and weak bases: acid name formula hypochlorous acid HClO hydrofluoric acid HF 3.0 x 10-8 base name formula methylamine CH NH, 4.4 x 10-4 pyridine CHN 1.7* 109 6.8 x 10 4 data to rank the following solutions in order of increasing pH. In other words, select the solution that will have the next lowest pH, and so on. solution pH...
K Consider the following data on some weak acids and weak bases: adid base name formula...
K Consider the following data on some weak acids and weak bases: adid base name formula name formula hypochlorous add HCIO |3.0 x 10-8 Pyridine CHN 1.7*10-9 acetic add HCH,CO2 1.8 * 10-5 ethylamine C, H, NH2 6.4 x 10-4 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that to the solution that will have the next lowest pH, and so on. solution 0.1 M...
Consider the following table: Name Formula Conjugate Acid Ammonia NH3 ΝΗ, Methylamine CH3NH2 CH, NH3 + Ethylamine C2H5NH2 C,HNH3 Aniline CH NH2 CH3NH, Pyridinem CH N CH NH Kb 1.8 x 10-5 4.38 x 10-4 5.6 x 10-4 3.8 x 10-10 1.7 x 10-9 Which base would be the best choice for preparing a pH = 9.50 buffer? methylamine pyridine ethylamine aniline ammonia
(8 pts) Comparing dissociation constants, circle the strongest base in the following pairs. You must justify your reasoning and show any calculations to receive credit. 5. Circle the strongest base in the pair: A. CsHsN and NHs and (pyridine and ammonia bases) Justification: B. PO. and AsO. and (phosphate and arsenate) Justification: 6. (10 pts) Calculate Ka of a weak acid given that a 2.3 M HA solution has a pH of 1.55. Ka: 7, (10 pts) Calculate the pH...
Conjugate Name Formula Kb Question3 Acid NH4 CH3NH,+ 4.38 x 104 Question 4 Ammonia NH3 1.8 x 10-5 Methylamine CHNH2 Question 5 1 pt C2HsNH2 C2H, NH 5.6 x 104 hylamine Aniline Pyridine Question6 CoH, NH2C6H,NH3+ 3.8 x 1010 Question 7 CsHsNH+ 1.7 x 109 Question 8 1 pt Which base would be the best choice for preparing a pH- 9.50 Question 9 buffer? O aniline O ammonia Oethylamine Question 10 Question 11 1 pt pyridine Omethylamine
6. What is the pH of 1 x 10 M HC1? a. 6.00 b. 6.98 C. 7.98 d. 8.00 e. need K 7. What is the pH of 2.7 M Ba(OH)2? a. pH--0.726 b. pH 0.425 c. pH 5.32 d. pH 13.27 e. pH 14.73 After completing the following unfinished Base lonization table, what is the order of increasing base strength? 8. Base рк, Bicarbonate ion, HCO3 Pyridine, C$HsN Acetate ion, CH3COO 2.2 x 10-8 8.77 5.7 x 10-10 a....
ACIDS AND BASES = Predicting the que base properties of salts Consider the following data on some weak acids and weak bases: acid name formula hypochlorous acid HClO hydrofluoric acid HF 3.0 x 10-8 base name formula methylamine CH NH, 4.4 x 10-4 pyridine CHN 1.7* 109 6.8 x 10 4 data to rank the following solutions in order of increasing pH. In other words, select the solution that will have the next lowest pH, and so on. solution pH...
K Consider the following data on some weak acids and weak bases: adid base name formula name formula hypochlorous add HCIO |3.0 x 10-8 Pyridine CHN 1.7*10-9 acetic add HCH,CO2 1.8 * 10-5 ethylamine C, H, NH2 6.4 x 10-4 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that to the solution that will have the next lowest pH, and so on. solution 0.1 M...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago