Please show all workings please. Thank you so much!!
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Please show all workings please. Thank you so much!!
Phenol (C6H5OH) is an aromatic compound that...
Please explain the questions above. Thank you The following questions A24 - A26 relate to 100 ml of 0.0150 M solution o...
Please explain the questions above. Thank you
The following questions A24 - A26 relate to 100 ml of 0.0150 M solution of benzoic acid (C6H3COOH). K.(C6H3COOH) = 6.4 x 10. Question A24. What is the pH of the benzoic acid solution? A. 1.8 B. 3.0 C. 4.5 D. 6.0 E. 8.0 (3 minutes) Question A25. What is the pH of the solution after the addition of 1.0 x 10-3 moles of NaOH? You may assume no volume change to the...
can you do number 10,11,12,13,14,15,16,17,18,19 and 20? show calculations please FORMA 10) 6 moles of H2...
can you do number 10,11,12,13,14,15,16,17,18,19 and 20?
show calculations please
FORMA 10) 6 moles of H2 will make how many moles of CHO, a)6 b) 12 c) 0.5 d) 1 e) 2 11. In which case is the element correctly matched with its combining ability? a) K:+ b) Mg: +2 c) Al: +3 d) a & b e), b, & c 12 Based on your knowledge of the periodic table, which would be a correct formula? a) CaS b) NaBr...
Please help with the prelab questions! thank you!!!! Especially 2 and 3! Pre-Lab Questions 1. Calculate...
Please help with the prelab questions! thank you!!!!
Especially 2 and 3!
Pre-Lab Questions 1. Calculate the theoretical equivalence point (the volume!) in terms of ml NaOH adde each of the titrations. Assume the concentration of acid is 0.81 M and the concentration of base is 0.51 M. 2. Which equation can be used to find the pH of a buffer? Calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after...
Please show all work as needed and provide correct multiple choice answer. Thanks 5. You are...
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
Please answer these 5 questions. 1) a buffer is made by dissolving (CH3NH3)Cl and CH3NH2 in...
Please answer these 5 questions. 1) a buffer is made by dissolving (CH3NH3)Cl and CH3NH2 in water. Write equations to show how this buffer neutralizes added H3O+ and OH-. 2) If you add 15.0 mL of 1.25 M NaOH to 250. mL of a 0.200 M propanoic acid (CH3CH2CO2H) solution, what is the pH of the resulting solution? 3)If added to 500. mL of 0.20 M NaOH, which of these would form a biffer? Briefly, justify your decision for each...
Please help, I'm so confused!!!! This is due wednesday night!!! i'm gonna fail :(((( pH of...
Please help, I'm so confused!!!! This is due wednesday night!!!
i'm gonna fail :((((
pH of Buffer Solutions Procedure: Acetic Acid-Sodium Acetate Buffer (pKa acetic acid = 4.75) Weigh about 3.5 g of Na2C2H302 3H2O, record the exact mass, and add to a 250 ml beaker. Measure exactly 8.8 mL of 3.0 M acetic acid (use 10 mL grad cylinder) and add to the beaker containing the sodium acetate. • Measure exactly 55.6 mL of distilled water and add to...
please answer ALL parts of this one question. (a,b and part c). do not answer if...
please answer ALL parts of this one question. (a,b and part c). do
not answer if you will not answer them all please.
Use the References to access important values if needed for this question. A 1.00 liter solution contains 0.48 M acetic acid and 0.36 M sodium acetate. If 35.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water.) A....
questions 9,10 and 11 please! thank you lying 0.23 mol of hypochlorous acid and 0.27 mol...
questions 9,10 and 11 please! thank you
lying 0.23 mol of hypochlorous acid and 0.27 mol of sodium fent to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this to increase slightly. The pH does not increase drastically because the present in the buffer solution. The Ka of hypochlorous acid is A solution is prepared by dissolu hupachlorite in water sufficien buffer solution causes the pH toinen NaOH reacts with the 30.10-8 Ohypochlorous acid B)...
please help with whatever possible. thank you so much in advance. Name One use of serial...
please help with whatever possible. thank you so much in
advance.
Name One use of serial dilutions is to calculate the concentration of microorganisms. Since it would usually be challenging or even impossible to actually count the number of microorganisms in a sample, the sample is diluted and plated to get a reasonable number of colonies to count (usually between 25 to 250 colonies is the goal). Since each colony on an agar plate theoretically grew from a single microorganism,...
I would love any help at all! thank you! please show work! Start each problem by...
I would love any help at all! thank you! please show
work!
Start each problem by writing a balanced acid ionization in water reaction and setting up an appropriate ICE table. 1a 10.0 mL of 0.10 M acetic acid: pH = 2.87 K. = Step 1: Acid ionization reaction: HCH3CO2(aq) + H2O1) CH3CO2 (aq) + H2O*(aq) Step 2: Set up an ICE table HCH:CO2(aq) H2O CH3CO2 (aq) H3O*ac) - с E Step 3: Determine the [H3O*) using the pH. [H30%)...
Please explain the questions above. Thank you
The following questions A24 - A26 relate to 100 ml of 0.0150 M solution of benzoic acid (C6H3COOH). K.(C6H3COOH) = 6.4 x 10. Question A24. What is the pH of the benzoic acid solution? A. 1.8 B. 3.0 C. 4.5 D. 6.0 E. 8.0 (3 minutes) Question A25. What is the pH of the solution after the addition of 1.0 x 10-3 moles of NaOH? You may assume no volume change to the...
can you do number 10,11,12,13,14,15,16,17,18,19 and 20?
show calculations please
FORMA 10) 6 moles of H2 will make how many moles of CHO, a)6 b) 12 c) 0.5 d) 1 e) 2 11. In which case is the element correctly matched with its combining ability? a) K:+ b) Mg: +2 c) Al: +3 d) a & b e), b, & c 12 Based on your knowledge of the periodic table, which would be a correct formula? a) CaS b) NaBr...
Please help with the prelab questions! thank you!!!!
Especially 2 and 3!
Pre-Lab Questions 1. Calculate the theoretical equivalence point (the volume!) in terms of ml NaOH adde each of the titrations. Assume the concentration of acid is 0.81 M and the concentration of base is 0.51 M. 2. Which equation can be used to find the pH of a buffer? Calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after...
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
Please help, I'm so confused!!!! This is due wednesday night!!!
i'm gonna fail :((((
pH of Buffer Solutions Procedure: Acetic Acid-Sodium Acetate Buffer (pKa acetic acid = 4.75) Weigh about 3.5 g of Na2C2H302 3H2O, record the exact mass, and add to a 250 ml beaker. Measure exactly 8.8 mL of 3.0 M acetic acid (use 10 mL grad cylinder) and add to the beaker containing the sodium acetate. • Measure exactly 55.6 mL of distilled water and add to...
please answer ALL parts of this one question. (a,b and part c). do
not answer if you will not answer them all please.
Use the References to access important values if needed for this question. A 1.00 liter solution contains 0.48 M acetic acid and 0.36 M sodium acetate. If 35.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water.) A....
questions 9,10 and 11 please! thank you
lying 0.23 mol of hypochlorous acid and 0.27 mol of sodium fent to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this to increase slightly. The pH does not increase drastically because the present in the buffer solution. The Ka of hypochlorous acid is A solution is prepared by dissolu hupachlorite in water sufficien buffer solution causes the pH toinen NaOH reacts with the 30.10-8 Ohypochlorous acid B)...
please help with whatever possible. thank you so much in
advance.
Name One use of serial dilutions is to calculate the concentration of microorganisms. Since it would usually be challenging or even impossible to actually count the number of microorganisms in a sample, the sample is diluted and plated to get a reasonable number of colonies to count (usually between 25 to 250 colonies is the goal). Since each colony on an agar plate theoretically grew from a single microorganism,...
I would love any help at all! thank you! please show
work!
Start each problem by writing a balanced acid ionization in water reaction and setting up an appropriate ICE table. 1a 10.0 mL of 0.10 M acetic acid: pH = 2.87 K. = Step 1: Acid ionization reaction: HCH3CO2(aq) + H2O1) CH3CO2 (aq) + H2O*(aq) Step 2: Set up an ICE table HCH:CO2(aq) H2O CH3CO2 (aq) H3O*ac) - с E Step 3: Determine the [H3O*) using the pH. [H30%)...
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