State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoni...
State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoning (acid is chloroacetic acid, a weak acid):
Using the same weak acid, but having a higher concentration.
Using 80.00 mL of this weak acid instead of 40.00 mL.
Using a different weak acid that has a larger Ka value.
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State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoni...
State whether each of the following would increase, decrease, or leave the initial pH unchanged and...
State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoning: Using the same weak acid, but having a higher concentration. Using 80.00 mL of this weak acid instead of 40.00 mL.
Consider the following developments and state whether an economy's potential output would increase, decrease, or stay...
Consider the following developments and state whether an economy's potential output would increase, decrease, or stay the same. For each letter point below, please highlight one, and explain in one or two rows below each of your choices a. A decrease in the money supply Increase Stay the same Decrease b. A decrease in the unemployment rate Increase Stay the same Decrease c. An increase in manufacturing productivity Increase Stay the same Decrease d. An increase in the working age...
Does the pH of the solution increase, decrease, or stay the same when you add solid...
Does the pH of the solution increase, decrease, or stay the same when you add solid sodium hydrogen oxalate, NaHC2O4 to a dilute aqueous solution of oxalic acid, H2C2O4? Explain your answer using the equation below. H2C2O4 (aq) + H2O (l)⇌ HC2O41– (aq) + H3O+ (aq) 2)Why a solution of sodium chloride and hydrochloric acid cannot act as a buffer? (b) Propose a conjugate acid/base pair which can function as a buffer. 3) (a) Calculate the pH of a buffer...
LABORATORY 8 Post-Lab 1. Explain how each of the following errors would have altered your results....
LABORATORY 8 Post-Lab 1. Explain how each of the following errors would have altered your results. Clearly explain why your calculated answer would be high, low, or unchanged. (A single word answer is not acceptable.) a. You decided to take the pH after each addition of 5.0 mL of NaOH rather than after every 0.5 mL during the neutralization of your acid sample. b. While using the Half Volume method, your solution was dark pink (you overshot the endpoint) and...
1. For each of the following, predict whether an aqueous solution of the salt would be...
1. For each of the following, predict whether an aqueous solution of the salt would be acidic, basic or neutral. Explain. a. Nacis b. NaF c. NHIS d. KHCO3 e. (CH3)2NH2NO31 2. What is the pH of a solution that is 0.060 M in potassium propionate (CH3CH2COOK) and 0.085M in propionic acid (CH3CH2COOH)? The Ka for propionic acid is 1.3x10-5.5 3. Suppose you need to prepare a buffer for a pH of 10.6. An acid-base pair (HA/A') to use has...
How would you prepare 50.0 mL of a NaChi0Na CHO. buffer with pH-635 (give spec each...
How would you prepare 50.0 mL of a NaChi0Na CHO. buffer with pH-635 (give spec each component)? Assume that you want the total buffer concentration (Le, [weak acid]+ [conjugate ific masses of base]) 6、 a. to be 0.100 M. Review Example 16.4 on p. 72 in the Chang textbook. Make sure to select the sppropriate K- value for this buffer system. Show your work below. Maleic Acid: p-1.90 p-6.30 pk.--log K) [weak acid]+[conjugate base]- 0.100 M pH- pKa + MW...
2. Explain whether each of the following events will increase, decrease, or have no effect on...
2. Explain whether each of the following events will increase, decrease, or have no effect on long-run aggregate supply. Draw the graph and show your work. (a) The United State experiences a wave of immigration. (b) Congress raises the minimum wage to $15 per hour. (c) Intel invents a new and more powerful computer chip (d) A severe hurricane damages factories along the East Coast 3. Draw a diagram with aggregate demand, short-run aggregate supply, and long-run aggregate supply. Be...
EXPERIMENT Provided Materials and Equipment: General glassware found in the lab or in your drawer/locker 60...
EXPERIMENT Provided Materials and Equipment: General glassware found in the lab or in your drawer/locker 60 mL of 0.1 M HCl(aq) 60 mL of 0.1 M NaOH(aq) pH electrode and storage solution Logger Pro software Standard buffers for calibration pH 4.00 and pH 7.00 2 burets (per group of 4 students) Four solutions to test For the acid: Pour 60 mL of HCL in a buret using a funnel. Prepare 25 mL of each solution in a separate beaker (water,...
i want answer to all questions please Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the so...
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoning: Using the same weak acid, but having a higher concentration. Using 80.00 mL of this weak acid instead of 40.00 mL.
Consider the following developments and state whether an economy's potential output would increase, decrease, or stay the same. For each letter point below, please highlight one, and explain in one or two rows below each of your choices a. A decrease in the money supply Increase Stay the same Decrease b. A decrease in the unemployment rate Increase Stay the same Decrease c. An increase in manufacturing productivity Increase Stay the same Decrease d. An increase in the working age...
LABORATORY 8 Post-Lab 1. Explain how each of the following errors would have altered your results. Clearly explain why your calculated answer would be high, low, or unchanged. (A single word answer is not acceptable.) a. You decided to take the pH after each addition of 5.0 mL of NaOH rather than after every 0.5 mL during the neutralization of your acid sample. b. While using the Half Volume method, your solution was dark pink (you overshot the endpoint) and...
1. For each of the following, predict whether an aqueous solution of the salt would be acidic, basic or neutral. Explain. a. Nacis b. NaF c. NHIS d. KHCO3 e. (CH3)2NH2NO31 2. What is the pH of a solution that is 0.060 M in potassium propionate (CH3CH2COOK) and 0.085M in propionic acid (CH3CH2COOH)? The Ka for propionic acid is 1.3x10-5.5 3. Suppose you need to prepare a buffer for a pH of 10.6. An acid-base pair (HA/A') to use has...
How would you prepare 50.0 mL of a NaChi0Na CHO. buffer with pH-635 (give spec each component)? Assume that you want the total buffer concentration (Le, [weak acid]+ [conjugate ific masses of base]) 6、 a. to be 0.100 M. Review Example 16.4 on p. 72 in the Chang textbook. Make sure to select the sppropriate K- value for this buffer system. Show your work below. Maleic Acid: p-1.90 p-6.30 pk.--log K) [weak acid]+[conjugate base]- 0.100 M pH- pKa + MW...
2. Explain whether each of the following events will increase, decrease, or have no effect on long-run aggregate supply. Draw the graph and show your work. (a) The United State experiences a wave of immigration. (b) Congress raises the minimum wage to $15 per hour. (c) Intel invents a new and more powerful computer chip (d) A severe hurricane damages factories along the East Coast 3. Draw a diagram with aggregate demand, short-run aggregate supply, and long-run aggregate supply. Be...
EXPERIMENT Provided Materials and Equipment: General glassware found in the lab or in your drawer/locker 60 mL of 0.1 M HCl(aq) 60 mL of 0.1 M NaOH(aq) pH electrode and storage solution Logger Pro software Standard buffers for calibration pH 4.00 and pH 7.00 2 burets (per group of 4 students) Four solutions to test For the acid: Pour 60 mL of HCL in a buret using a funnel. Prepare 25 mL of each solution in a separate beaker (water,...
i want answer to all questions please
Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
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