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need help asap please
Use the acid/base dissociation constants on the back page of this worksheet...
Can someone please help me solve these, please show work/explanation and answer! I only need help...
Can someone please help me solve these, please show
work/explanation and answer! I only need help with d and e for
number 7. Then I do not know how to do 14 and 15.
7. Determine the pH of the following solutions 0.040 M HCI а. www b. 0.040 M КОН 0.0087 М НСIO С. 0.010 M CH3NH2 (methylamine) d. 0.018 M NaF е. 14. Write the species in solution for the following mixtures. Identify each as a weak/strong acid,...
i need help with finding the ph of an aq solution. im confused 9,10,12,13,14, &15. on...
i need help with finding the ph of an aq solution. im confused
9,10,12,13,14, &15. on 10 I caluclated 14 and 12 the closest
answer i got was 2.67, but i was exact. If its not a big
inconvience can you show me how? thank you
9. Calculate the pH of a 0.65 M NH3 solution if Kb for NH3 is 1.8x10-5. a) 2.47. b) 4.93. c) 11.53. d) 12.68. 10. The pH of a 0.2 M aqueous solution of...
please help!! calculate pH of solutions on second page a-c!! 1. (4 points) A buffer solution...
please help!! calculate pH of solutions on second page a-c!!
1. (4 points) A buffer solution is created with C;H,NH, and 0.012 M C;HsNH2. The K, for C,H,NH2 is 4.7 х 104. What is the concentration of C,HNH, in the buffer solution that has a pH of 11.50? а. What is the concentration of the buffer solution if 0.0011 M HC is added to the buffer in part a.? b. Why is the buffer a basic solution? Could this weak...
please solve and show work! Consider a 1.0 L solution of 0.20 M acetic acid, CH3COOH....
please solve and show work!
Consider a 1.0 L solution of 0.20 M acetic acid, CH3COOH. Addition of which reagent(s) will generate a buffer solution. X. 1.0 L of 0.20 M NaOH Y. 1.0 Lof 0.10 M NaOH Z. 1.0 L of 0.20 M CH3COONa A. X and Z B. Z only C. Y and Z D. X and Y E.Y only
Help calculating part B please! Given that carbonic acid, H2CO3, has a pkai = 6.37 and...
Help calculating part B please!
Given that carbonic acid, H2CO3, has a pkai = 6.37 and a pka2 = 10.33, answer the following. (a) If you wanted to make a pH 7 buffer solution starting with NaHCO3(aq), would you add 0.10 M HCl or 0.10 M NaOH? 0.10 M HCI O 0.10 M NaOH (b) If you began with 5.0 mL of 0.42 M NaHCO3, how many mL of your choice from (a) would you need to add to get...
Numbers 9-14 are predominant species problems! Explain your answer. Which of the following best describes the...
Numbers 9-14 are predominant species problems! Explain your answer. Which of the following best describes the composition of a solution labeled "0.10 M H,So"? 9. [H2SO] = 0.10M b. [H]>0.10 M, (So21 -0.10 M c. [H']= 0.20 M, [SO10.10 M d. [H']>0.10 M, [HSO.] <0.10 M e. [H'] 0.10 M, [HSO4] = 0.10 M a. 10. Which of the following best describes the composition of a solution labeled "O.10 M HCI"? [HCI) 0.10 M b. [H]<0.10 M, [CI]< 0.10 M...
number 15 work and explanation please Options A and C are equalily optimal A. C. 14....
number 15 work and explanation please
Options A and C are equalily optimal A. C. 14. Which of the following combinations will result in a buffer solution when dissolved in D. 100. mL of water? A. 0.20 mol HF and 0.10 mol NaOH B. 0.20 mol HBr and 0.10 mol NHs C 0.20 mol NaCI and 0.10 mol HCI D. None of these. 15. How many grams of Na2COs (molar mass 106 g/mol) must be added to 1.00 L of...
10. Fill in each blánk with increases or decreases As K, increases, acid strength As Kb...
10. Fill in each blánk with increases or decreases As K, increases, acid strength As Kb increases, base strength As pK, increases, acid strength As pKb increases, base strength As acid strength increases, conjugate base strength The stronger an acid, the the conjugate base. (stronger or weaker) HoCI NH4 11. a) Which is the HS stronger acid? stronger acid? stronger base? stronger base? HF pk-3.14 CH,OH pk, 10.0 b) Which is the c) Which is the d) Which is the...
please answer all question show work number 7 only please The pH of 2.0M HCI is...
please answer all question show work number 7 only
please
The pH of 2.0M HCI is a) 2.0, b) 1.0, c) 0.0, d)<0.0. 1. 2. Thymol blue appears red below pH 1.0, yellow between pH 2.5-8.0, and blue above pH 9.5. An aqueous solution turns green upon adding one drop of thymol blue. The pH of this solution is a) 0.5, b) 7, c) 9, d) 11. The buffer HF/F can' be prepared by mixing a) HF and NaF, b)...
Need help with these please :) Thanks What mass of sodium hypochlorite, NaOCI (molar mass 74.5...
Need help with these please :)
Thanks
What mass of sodium hypochlorite, NaOCI (molar mass 74.5 g/mol), must be added to 250 mL of 0.60 M HCIO (hypochlorous acid, K.-3.5 x 10"), in order to produce a solution having a pH of 7.257 (Ans. ; A 25.0-mL sample of 1.00 M NH, is titrated with 0.15 M HCl. What is the pH of the solation after 15.00 mL of acid have been added to the ammonia solution? K,-1.8 x 10'(Ans,pH-...
Can someone please help me solve these, please show
work/explanation and answer! I only need help with d and e for
number 7. Then I do not know how to do 14 and 15.
7. Determine the pH of the following solutions 0.040 M HCI а. www b. 0.040 M КОН 0.0087 М НСIO С. 0.010 M CH3NH2 (methylamine) d. 0.018 M NaF е. 14. Write the species in solution for the following mixtures. Identify each as a weak/strong acid,...
i need help with finding the ph of an aq solution. im confused
9,10,12,13,14, &15. on 10 I caluclated 14 and 12 the closest
answer i got was 2.67, but i was exact. If its not a big
inconvience can you show me how? thank you
9. Calculate the pH of a 0.65 M NH3 solution if Kb for NH3 is 1.8x10-5. a) 2.47. b) 4.93. c) 11.53. d) 12.68. 10. The pH of a 0.2 M aqueous solution of...
please help!! calculate pH of solutions on second page a-c!!
1. (4 points) A buffer solution is created with C;H,NH, and 0.012 M C;HsNH2. The K, for C,H,NH2 is 4.7 х 104. What is the concentration of C,HNH, in the buffer solution that has a pH of 11.50? а. What is the concentration of the buffer solution if 0.0011 M HC is added to the buffer in part a.? b. Why is the buffer a basic solution? Could this weak...
please solve and show work!
Consider a 1.0 L solution of 0.20 M acetic acid, CH3COOH. Addition of which reagent(s) will generate a buffer solution. X. 1.0 L of 0.20 M NaOH Y. 1.0 Lof 0.10 M NaOH Z. 1.0 L of 0.20 M CH3COONa A. X and Z B. Z only C. Y and Z D. X and Y E.Y only
Help calculating part B please!
Given that carbonic acid, H2CO3, has a pkai = 6.37 and a pka2 = 10.33, answer the following. (a) If you wanted to make a pH 7 buffer solution starting with NaHCO3(aq), would you add 0.10 M HCl or 0.10 M NaOH? 0.10 M HCI O 0.10 M NaOH (b) If you began with 5.0 mL of 0.42 M NaHCO3, how many mL of your choice from (a) would you need to add to get...
Numbers 9-14 are predominant species problems! Explain your answer. Which of the following best describes the composition of a solution labeled "0.10 M H,So"? 9. [H2SO] = 0.10M b. [H]>0.10 M, (So21 -0.10 M c. [H']= 0.20 M, [SO10.10 M d. [H']>0.10 M, [HSO.] <0.10 M e. [H'] 0.10 M, [HSO4] = 0.10 M a. 10. Which of the following best describes the composition of a solution labeled "O.10 M HCI"? [HCI) 0.10 M b. [H]<0.10 M, [CI]< 0.10 M...
number 15 work and explanation please
Options A and C are equalily optimal A. C. 14. Which of the following combinations will result in a buffer solution when dissolved in D. 100. mL of water? A. 0.20 mol HF and 0.10 mol NaOH B. 0.20 mol HBr and 0.10 mol NHs C 0.20 mol NaCI and 0.10 mol HCI D. None of these. 15. How many grams of Na2COs (molar mass 106 g/mol) must be added to 1.00 L of...
10. Fill in each blánk with increases or decreases As K, increases, acid strength As Kb increases, base strength As pK, increases, acid strength As pKb increases, base strength As acid strength increases, conjugate base strength The stronger an acid, the the conjugate base. (stronger or weaker) HoCI NH4 11. a) Which is the HS stronger acid? stronger acid? stronger base? stronger base? HF pk-3.14 CH,OH pk, 10.0 b) Which is the c) Which is the d) Which is the...
please answer all question show work number 7 only
please
The pH of 2.0M HCI is a) 2.0, b) 1.0, c) 0.0, d)<0.0. 1. 2. Thymol blue appears red below pH 1.0, yellow between pH 2.5-8.0, and blue above pH 9.5. An aqueous solution turns green upon adding one drop of thymol blue. The pH of this solution is a) 0.5, b) 7, c) 9, d) 11. The buffer HF/F can' be prepared by mixing a) HF and NaF, b)...
Need help with these please :)
Thanks
What mass of sodium hypochlorite, NaOCI (molar mass 74.5 g/mol), must be added to 250 mL of 0.60 M HCIO (hypochlorous acid, K.-3.5 x 10"), in order to produce a solution having a pH of 7.257 (Ans. ; A 25.0-mL sample of 1.00 M NH, is titrated with 0.15 M HCl. What is the pH of the solation after 15.00 mL of acid have been added to the ammonia solution? K,-1.8 x 10'(Ans,pH-...
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