Homework Answers
1a) Solution become red. Because adding HCl, increase the concentration of H+ ions thus shift the equilibrium in backward direction and solution become red.
b) Adding NaOH shift the equilibrium in forward direction because OH- react with H+ ion to form water thus, concentration of H+ decreases and equilibrium shift to forward direction.
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Questions: 1. The following system refers to a acid-base indicator. Let's say we start with a neutral solution that...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
QUESTION 9 12 points Save if a small amount of an acid or base is added...
QUESTION 9 12 points Save if a small amount of an acid or base is added to a buffer solution, the pH value of this solution will exhibit small changes. A buffer solution is produced when similar amounts of a weak + acid and its weak conjugate base are in equilibrium If the ratio between both components in a buffer solution is 1:1, the pH value of the buffer solution will be equal to the pka -value of the acid...
Arterial Blood Gas Interpretation Posttest Directions: Complete this test using the answer sheet provided The solution...
Arterial Blood Gas Interpretation Posttest Directions: Complete this test using the answer sheet provided The solution that would be most alkalotic would be the one with a pH of: A. Four Seven C. Nine Fourteen D. A. The normal pH range for blood is: 7.0 - 7.25 B. 7.30 - 7.40 C. 7.35 -7.45 D. 7.45 - 7.55 The respiratory system compensates for changes in the pH level by responding to changes in the levels of: A. CO2 B. H0...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
struggling with it all please answer all questions 54-61 thank you which of these molecules is...
struggling with it all please answer all questions 54-61 thank you
which of these molecules is meso tartaric acid (meso 23-dihydroxysuccinic acid) CO2H ÇO2H COH None of these ÇOH B) TC) D) OL H-C-OH HO- C- H H - HO- H - C-H C-OH HO—C H H C -H H- C-OH ---OH COH COH сон 55. If the medicine you are taking tastes very bitter and smells like dead fish, because it contains an amine), what might you take to...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An acid increases the concentration of hydronium in solution. b) An acid is a proton donor. c) An example of an acid is HBr. d) An acid increases the concentration of protons in solution. e) An acid increases the concentration of hydroxide in solution. Question 2 (1 point) Which of the following changes in blood pH would you expect to observe in a hyperventilating patient,...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion,...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown centained only sulfate ion. Which test would most quickly 3. Consider each set of results below which were carried out on a solution containing either (1)one of the six anions studied in this experiment, or (2) none...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion,...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown contained only sulfate ion. Which test would most quickly (that is, in the fewest steps) confirm your hypothesis? Explain. Consider each set of results below which were carried out on a solution containing either (1)one of the...
Answer questions #1-6 please Observations and Interpretations to be Handed In For Activity: Observations and Interpretations...
Answer questions #1-6 please
Observations and Interpretations to be Handed In For Activity: Observations and Interpretations 1) Balance the chromate / dichromate equilibrium equation: 2 Cro. (aq) + H(aq) + Cryo,'(aq) + H2O(1) (unbalanced equation) 2) What was the original color of the K,CrO solution? If the above equilibrium is established in the original solution, which species, Cro, (aq), or Cro" (aq) appears to be present in greatest amount? 3) What color did you observe after adding the 3M H2SO,...
EXP #9:Pre-Lab answer question 3, attached below is page two to reference! Instructor Name: Student Name:...
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) = H(aq) + MO"(aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH the color reverts to yellow a. Why does adding 6 M HCl to...
QUESTION 9 12 points Save if a small amount of an acid or base is added to a buffer solution, the pH value of this solution will exhibit small changes. A buffer solution is produced when similar amounts of a weak + acid and its weak conjugate base are in equilibrium If the ratio between both components in a buffer solution is 1:1, the pH value of the buffer solution will be equal to the pka -value of the acid...
Arterial Blood Gas Interpretation Posttest Directions: Complete this test using the answer sheet provided The solution that would be most alkalotic would be the one with a pH of: A. Four Seven C. Nine Fourteen D. A. The normal pH range for blood is: 7.0 - 7.25 B. 7.30 - 7.40 C. 7.35 -7.45 D. 7.45 - 7.55 The respiratory system compensates for changes in the pH level by responding to changes in the levels of: A. CO2 B. H0...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
struggling with it all please answer all questions 54-61 thank you
which of these molecules is meso tartaric acid (meso 23-dihydroxysuccinic acid) CO2H ÇO2H COH None of these ÇOH B) TC) D) OL H-C-OH HO- C- H H - HO- H - C-H C-OH HO—C H H C -H H- C-OH ---OH COH COH сон 55. If the medicine you are taking tastes very bitter and smells like dead fish, because it contains an amine), what might you take to...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An acid increases the concentration of hydronium in solution. b) An acid is a proton donor. c) An example of an acid is HBr. d) An acid increases the concentration of protons in solution. e) An acid increases the concentration of hydroxide in solution. Question 2 (1 point) Which of the following changes in blood pH would you expect to observe in a hyperventilating patient,...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown centained only sulfate ion. Which test would most quickly 3. Consider each set of results below which were carried out on a solution containing either (1)one of the six anions studied in this experiment, or (2) none...
Post-Lab Questions: 1. If you had a solution which contained only chloride, bromide, or iodide ion, which of the three tests would most clearly tell you which anion was in the solution? Explain. 2.) Suppose that you were quite sure that your unknown contained only sulfate ion. Which test would most quickly (that is, in the fewest steps) confirm your hypothesis? Explain. Consider each set of results below which were carried out on a solution containing either (1)one of the...
Answer questions #1-6 please
Observations and Interpretations to be Handed In For Activity: Observations and Interpretations 1) Balance the chromate / dichromate equilibrium equation: 2 Cro. (aq) + H(aq) + Cryo,'(aq) + H2O(1) (unbalanced equation) 2) What was the original color of the K,CrO solution? If the above equilibrium is established in the original solution, which species, Cro, (aq), or Cro" (aq) appears to be present in greatest amount? 3) What color did you observe after adding the 3M H2SO,...
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
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