Assume all data given and all experiments described below occur at standard temperature, 298 K. 1....
Assume all data given and all experiments described below occur at standard temperature, 298 K.
1.
a. A 0.90 M solution of sodium metaborate, NaBO2 was prepared. Given that the weak acid metaboric acid, HBO2, has a pKa = 6.9, what molar concentration of HBO2 would exist in the solution of NaBO2 at equilibrium?
b. What is the pOH of the solution described in part a above?
c. What is the pH of the solution described in part a above?
d. A solution of 1.0 M HBO2 has a % dissociation of 0.0355%. What is the % dissociation of HBO2 in a mixture of 1.0 M HBO2 and 1.0 M HClO2 (Ka = 1.1x10-4)?
e. What is the pH of the mixture solution described in part d above?
f. What is G° for the acid dissociation of HBO2 at 298 K?
Homework Answers
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Assume all data given and all experiments described below occur
at standard temperature, 298 K.
1....
please solve the calculation page DATA SHEET: PH, BUFFERS AND K, Part 1: The Titration of...
please solve the calculation page
DATA SHEET: PH, BUFFERS AND K, Part 1: The Titration of a STRONG ACID (HCI) with NaOH using pH meter a) pH of 25 mL distilled water 5.65 (Measure volume with graduated cylinder) b) pH of 25 mL distilled water with 1 drop 1.0 M HCI 2.92 c) pH of 25 mL distilled water with 10 drops 1.0 M HCI (Note: (H') in 2c is about 10 times that of 2b) 1.10 d) Titration of...
3) (ICE Analysis - 12 points) Consider a 1.0L aqueous solution at 298 K which is...
3) (ICE Analysis - 12 points) Consider a 1.0L aqueous solution at 298 K which is known to initially contain exactly 1.0 micromoles (1x10-6 moles) of the weak acid hypochlorous acid ( HOCI, PKA = 7.53) - i.e. this is what was added to the system initially before any chemistry or equilibration occurs. Assuming all activity coefficients are equal to 1.0, there are no others substances in the system, and that the only reaction that occurs in the system is:...
please show all work for part III :) all the information needed is in the pictures...
please show all work for part III :) all the information
needed is in the pictures
III. Preparing HC,HO, Solutions and Determining pH only cal. One! theoretical pH 1.0 x 10-14 (181) concentration of HC,H,O, M measured pH ya ? 3.06 1.0 x 10-2 ka: 1. 8x10°3 ixio- 3.43 1.0 x 10-3 x = CH) -1,34% 103n 3.87 1.0 x 107 PM - 04 TH11 4.30 concentration of HC,H,O, M calculated K of HC H302 based on pH data literature...
estion 41 of 65 > Look up the ionization constant (K) values for the given acids....
estion 41 of 65 > Look up the ionization constant (K) values for the given acids. acetic (ethanoic) acid: K = formic (methanoic) acid: Ka = propanoic acid: Ka = Arrange the acids according to strength. Strongest acid Weakest acid Answer Bank propanoic acid formic acid acetic acid Question 61 of 65 > What is the pH of an aqueous solution with a hydroxide ion concentration of 1.60 x 10-4 M? 14.2 O 3.80 0 -0.204 O 10.2 estion 64...
41.645 -113,30 Calculate the pH of a solution of 0.1M pyridine solution (CHN) with a k)...
41.645 -113,30 Calculate the pH of a solution of 0.1M pyridine solution (CHN) with a k) = 1.7 x 10-9 W Colts N 1₂O ² ColH₂NH TOH eek Lase I o.l k, CH, NAD LOH-] [Estoni C -x E .1-x x =LOH 1.7.10-9 = 0.10-0 If the base H, NON has a ky 4.4 X 10", what is the pH of a 0.05M solution of H, NOH? It is known that the K, for ammonia is 1.8 x 10-5 and...
Can you please show math, formulas and explain. 1. If the pH of a solution is...
Can you please show math, formulas and explain. 1. If the pH of a solution is 7.5, what is the pOH? pH = - log[H+] [H+][OH-] = 1.0 x 10-14 M2 2. Given the Ka values for two acids, determine the pKas and which is a stronger acid. Ka1 = 1.38 × 10–7 Ka2 = 1.70 × 10–4 3. The pH of a sample of blood is 7.4, while gastric juice is pH 2.4. The blood sample has: A) one...
show all work please! lear suc ernt raT ity 5. At any given temperature (not 298K),...
show all work please!
lear suc ernt raT ity 5. At any given temperature (not 298K), the neutral pH is 6.68. Which of the statements below is TRUE? A. At pH6.68 [H3 OH B. At this temperature Kw 2.1 x 107 C. ApH> 6.68 will be considered acidic D. At pH 6.68: [H30 2.1x 107 M net 6. At 298 K, a solution has a lOH)-7.1x10-3 M. Which of the statements below is TRUE? cid A. The pH is 2.15...
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH...
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH 3.25 0.25 (H) (OH) Acidic or basic 6.14x10 12.25 1.77 9.83x102 A 0.185M solution of weak acid has a pH of 2.95. Calculate the lonization constant (K) for the acid. For this you will need to determine the relationship between the [HA], and the [H01. You're given [HA] and you'll need to find [H,0+- you can get this from pH. Just as we have...
Strong Acids and [H'] (and pH) The pH of a strong acid is the concentration of...
Strong Acids and [H'] (and pH) The pH of a strong acid is the concentration of the strong acid. 1.OM HCI makes 1.OM H. Except H2SO4. Its pH is a little lower than that because: H2SO4(aq) H+ (aq) + HS07 (aq) Strong acids generally have K.>>1. We assume K = . The HSO, is a weak acid: HSO2 (aq) + H+ (aq) + S0 - Ka = 1.2 * 10-2 Weak Acids and [H+] (and pH) These are weak electrolytes....
Which of the following statements is true of weak acids dissolved in water: They...
Which of the following statements is true of weak acids dissolved in water: They are completely ionized in water They are totally unionized in water They are partially ionized in water The dissociation constant is a function of pH QUESTION 13 Which of the following is a hydroxide ion? H3O+ OH- HOOH CH3OH2+ QUESTION 14 The following molecule is an example of which class...
please solve the calculation page
DATA SHEET: PH, BUFFERS AND K, Part 1: The Titration of a STRONG ACID (HCI) with NaOH using pH meter a) pH of 25 mL distilled water 5.65 (Measure volume with graduated cylinder) b) pH of 25 mL distilled water with 1 drop 1.0 M HCI 2.92 c) pH of 25 mL distilled water with 10 drops 1.0 M HCI (Note: (H') in 2c is about 10 times that of 2b) 1.10 d) Titration of...
3) (ICE Analysis - 12 points) Consider a 1.0L aqueous solution at 298 K which is known to initially contain exactly 1.0 micromoles (1x10-6 moles) of the weak acid hypochlorous acid ( HOCI, PKA = 7.53) - i.e. this is what was added to the system initially before any chemistry or equilibration occurs. Assuming all activity coefficients are equal to 1.0, there are no others substances in the system, and that the only reaction that occurs in the system is:...
please show all work for part III :) all the information
needed is in the pictures
III. Preparing HC,HO, Solutions and Determining pH only cal. One! theoretical pH 1.0 x 10-14 (181) concentration of HC,H,O, M measured pH ya ? 3.06 1.0 x 10-2 ka: 1. 8x10°3 ixio- 3.43 1.0 x 10-3 x = CH) -1,34% 103n 3.87 1.0 x 107 PM - 04 TH11 4.30 concentration of HC,H,O, M calculated K of HC H302 based on pH data literature...
estion 41 of 65 > Look up the ionization constant (K) values for the given acids. acetic (ethanoic) acid: K = formic (methanoic) acid: Ka = propanoic acid: Ka = Arrange the acids according to strength. Strongest acid Weakest acid Answer Bank propanoic acid formic acid acetic acid Question 61 of 65 > What is the pH of an aqueous solution with a hydroxide ion concentration of 1.60 x 10-4 M? 14.2 O 3.80 0 -0.204 O 10.2 estion 64...
41.645 -113,30 Calculate the pH of a solution of 0.1M pyridine solution (CHN) with a k) = 1.7 x 10-9 W Colts N 1₂O ² ColH₂NH TOH eek Lase I o.l k, CH, NAD LOH-] [Estoni C -x E .1-x x =LOH 1.7.10-9 = 0.10-0 If the base H, NON has a ky 4.4 X 10", what is the pH of a 0.05M solution of H, NOH? It is known that the K, for ammonia is 1.8 x 10-5 and...
show all work please!
lear suc ernt raT ity 5. At any given temperature (not 298K), the neutral pH is 6.68. Which of the statements below is TRUE? A. At pH6.68 [H3 OH B. At this temperature Kw 2.1 x 107 C. ApH> 6.68 will be considered acidic D. At pH 6.68: [H30 2.1x 107 M net 6. At 298 K, a solution has a lOH)-7.1x10-3 M. Which of the statements below is TRUE? cid A. The pH is 2.15...
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH 3.25 0.25 (H) (OH) Acidic or basic 6.14x10 12.25 1.77 9.83x102 A 0.185M solution of weak acid has a pH of 2.95. Calculate the lonization constant (K) for the acid. For this you will need to determine the relationship between the [HA], and the [H01. You're given [HA] and you'll need to find [H,0+- you can get this from pH. Just as we have...
Strong Acids and [H'] (and pH) The pH of a strong acid is the concentration of the strong acid. 1.OM HCI makes 1.OM H. Except H2SO4. Its pH is a little lower than that because: H2SO4(aq) H+ (aq) + HS07 (aq) Strong acids generally have K.>>1. We assume K = . The HSO, is a weak acid: HSO2 (aq) + H+ (aq) + S0 - Ka = 1.2 * 10-2 Weak Acids and [H+] (and pH) These are weak electrolytes....
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