Homework Answers
Answer (True)
For higher concentration of polyprotic ion... This statement should be True.... Because the first Ka value will be higher than Ka2.... So the second H+ will be... Low dissociate so we can say tgat ph will not effected if second H+ produced in low amount.....
Let if first ph is, =-4.7 from first dissociation.. And after second dissociation ph=-4.7-0.007=-4.707 it is same as before.. So we can say ph is not effected. In polyprotic ion in higher concentration.
But in case of low concentration this statement will be false... That time small will effect the ph of solutions
I hope i solved your problem... Plz like my solution give me thumbs up...
This was tricky question
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In polyprotic acids, you can always ignore the contribution of hydrogen ions from any subsequent ionizations...
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and...
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and react with water to produce hydronium ions or hydroxide ions that contribute to the pH of the salt solution. Since strong acids and strong bases completely ionize in solution, the reverse reaction essentially does not occur, meaning that the resulting conjugate base of a strong acid or conjugate acid of a strong base do NOT act as acids or bases. Ions that are conjugate...
please help >< Polyprotic acids have more than one proton to donate to water, therefore have...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
Titration: Acids and Bases 2. How can you determine which acid is diprotic? 3. using the...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05 B) 12.95 C) 12.65 D) 1.35 41. From Table 16.3, which of the following statements for Carbonic acid is true? See page 7 TABLE 16.3. Acid-Dissociation Constants of Some Common Polyprotic Acids Formula KI Ascorbic HỊCH, 80 X 10+ 16 X 10-12 Carbonic H.CO, 43 X 10 56 x 101 Citric HC,H,Op 74 X 10+ 1.7 X 100 4.0 X 10 Oxalic H.CO 5.9...
nob 2. Strong acids always protonate amide oxygens and never protonate amide nitrogens. Provide two reasons that...
nob 2. Strong acids always protonate amide oxygens and never protonate amide nitrogens. Provide two reasons that explain this fact (4 points). 6. Propose multi step synthetic routes from the given organic molecule to the indicated product. You can use any organic solvent and any of the following organic chemicals CH,-, CH,CH,-Br and inorganic chemicals: co, KCN, Mg, Li, Cul, Zn, Sn, HCI, H,O, H,SO, DIBALH, LIAIH, NaBH, Cro, H, and Pd catalyst, PBr, and SOCI,. (24 points, 6 each)....
Good Morning, can I please get help on answering these seven questions? Thank you, in advance...
Good Morning, can I please get help on answering these seven
questions? Thank you, in advance :)
1. During filtration in the kidney, which of the following is least likely (under normal circumstances) to enter Bowman's capsule from the bloodstream? water plasma proteins amino acids glucose lons 2. Where does secretion occur in a nephron? Loop of Henle Bowman's capsule glomerulus collecting duct 3. The process of filtration from the capillaries into Bowman's capsule is driven by diffusion concentration gradients...
part 1) Write the full electron configuration for any five of the elements you studied, both...
part 1) Write the full electron configuration for any five of
the elements you studied, both of the atom and of the ion. Identify
the valence electrons in each.
CaCl2, KCl, FeCl2, CuCl2, LiCl
Part 2)
1. Based on your conductivity values, can you classify the
solutions as those that contain molecular compounds, ionic
compounds, or molecular acids?
2. Classify each as strong or weak electrolyte.
3. Arrange the molecular acids from the strongest to the
weakest, based on conductivity...
You can always withdraw the money you have contributed to a Roth IRA without paying taxes...
You can always withdraw the money you have contributed to a Roth IRA without paying taxes on the withdrawal because you have already paid taxes on the original contribution. If you are younger than 59 and a half years old and opened your Roth IRA at least five years ago, you can also withdraw up to $10,000 of your Roth IRA earnings (that is, money earned from your contributions) without paying any taxes on the earnings as long you: Earned...
Can anyone please help with how to calculate degree of ionization for the first 3 solutions...
Can anyone please help with how to calculate degree of
ionization for the first 3 solutions as well as how to calculate
the expected pH for solution 4? thank you!
Experiment 8: Equilibria of Weak Acids and Bases Lab Report Sheet 1 Composition 20.0 mL of 0.1 M HC2H302 - (A weak acid) pH 12.76 2.42 2.59 10.0 mL of 0.10 M HC2H3O2 + 10.0 mL H20 - (effect of dilution on the degree of ionization of weak acid) 10.0...
In this puzzle, you can bounce between the two 3’s, but you cannot reach any other...
In this puzzle, you can bounce between the two 3’s, but you
cannot reach any other squares. Write a function bool Solvable(int
start, int[] squares) that takes a starting position of the marker
along with the array of squares. The function should return true if
it is possible to solve the puzzle from the starting configuration,
and false if it is impossible. You may assume all the integers in
the array are positive except for the last entry, the goal...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05 B) 12.95 C) 12.65 D) 1.35 41. From Table 16.3, which of the following statements for Carbonic acid is true? See page 7 TABLE 16.3. Acid-Dissociation Constants of Some Common Polyprotic Acids Formula KI Ascorbic HỊCH, 80 X 10+ 16 X 10-12 Carbonic H.CO, 43 X 10 56 x 101 Citric HC,H,Op 74 X 10+ 1.7 X 100 4.0 X 10 Oxalic H.CO 5.9...
nob 2. Strong acids always protonate amide oxygens and never protonate amide nitrogens. Provide two reasons that explain this fact (4 points). 6. Propose multi step synthetic routes from the given organic molecule to the indicated product. You can use any organic solvent and any of the following organic chemicals CH,-, CH,CH,-Br and inorganic chemicals: co, KCN, Mg, Li, Cul, Zn, Sn, HCI, H,O, H,SO, DIBALH, LIAIH, NaBH, Cro, H, and Pd catalyst, PBr, and SOCI,. (24 points, 6 each)....
Good Morning, can I please get help on answering these seven
questions? Thank you, in advance :)
1. During filtration in the kidney, which of the following is least likely (under normal circumstances) to enter Bowman's capsule from the bloodstream? water plasma proteins amino acids glucose lons 2. Where does secretion occur in a nephron? Loop of Henle Bowman's capsule glomerulus collecting duct 3. The process of filtration from the capillaries into Bowman's capsule is driven by diffusion concentration gradients...
part 1) Write the full electron configuration for any five of
the elements you studied, both of the atom and of the ion. Identify
the valence electrons in each.
CaCl2, KCl, FeCl2, CuCl2, LiCl
Part 2)
1. Based on your conductivity values, can you classify the
solutions as those that contain molecular compounds, ionic
compounds, or molecular acids?
2. Classify each as strong or weak electrolyte.
3. Arrange the molecular acids from the strongest to the
weakest, based on conductivity...
Can anyone please help with how to calculate degree of
ionization for the first 3 solutions as well as how to calculate
the expected pH for solution 4? thank you!
Experiment 8: Equilibria of Weak Acids and Bases Lab Report Sheet 1 Composition 20.0 mL of 0.1 M HC2H302 - (A weak acid) pH 12.76 2.42 2.59 10.0 mL of 0.10 M HC2H3O2 + 10.0 mL H20 - (effect of dilution on the degree of ionization of weak acid) 10.0...
In this puzzle, you can bounce between the two 3’s, but you
cannot reach any other squares. Write a function bool Solvable(int
start, int[] squares) that takes a starting position of the marker
along with the array of squares. The function should return true if
it is possible to solve the puzzle from the starting configuration,
and false if it is impossible. You may assume all the integers in
the array are positive except for the last entry, the goal...
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