Calculate the pH of a solution which is 0.0020 M in KOH and 0.015 M in...
Calculate the pH of a solution which is 0.0070 M in KOH and 0.019 M in NaNO3 using activities. Submit Answer Tries 0/5 Calculate a pH for the same solution, ignoring activities. Submit Answer Tries 0/5
Part A What is the pH of a 0.0020 M Ba(OH)2 solution? 0 2.40 O 11.60 O 2.70 O 11.30 Submit Previous Answers Request Answer X Incorrect; Try Again Provide Feedback
What will the pH of a solution be when 0.3108 L of 2.703 M KOH is added to 0.187 L of 2.07 M ascorbic acid (H2C6H606)? Enter your answer to 4 significant figures. (click here to open a table of K, and kb values in a new window) pH of solution = 13.89 Submit Answer Incorrect. Tries 1/2 Previous Tries
3. (a) Calculate the pH of a solution 0.145 M with respect to CH3CH2COOH and 0.115 M with respect to K+CH3CH2COO-. Ka = 1.3 x 10 – 5 ; pKa = 4.89 (b) Calculate the pH of the same solution after adding 0.015 M KOH. (c) Calculate the pH of the same solution as in part (a) but after addition of 0.015 M HBr.
Three spherical masses are located in a plane at the positions shown below. (m) Y 1 2 3 4 5 -5 -4 -3 -2 -1 0 X (m) The masses are Q=0.700 kg, R=0.400 kg, and S=0.800 kg. Calculate the x and y coordinates of the Center-of-Mass of this three mass system. XCM = 1.736 cm YCM = 2105 cm Submit Answer Incorrect. Tries 1/20 Previous Tries e Post Discussion Send Feedback
Functions Content Grades 1.0 L of a 14 M solution of formic acid (k-1.8x10") was prepared. What is the pH of this solution? Somit Tries 0/2 Enough potassium formate was added to achieve a final potassium formate concentration of 16 M (assume the volume does not change). What is the pH of this new solution? Submit Answer Tries 0/2 10 mL of 10 M NaOH is added to the solution. What is the new ph? Incorrect. Tries 2/2 Previous Toes...
Feedback Given that Kb 4.4x10-4 for methylamine exactly 650 mL of a buffer solution which has a pH of 10.84 and a final methylammonium chloride salt concentration [CHyNH,]-0.100 M, one would need to use (mass) of CH3NH3CI(s) Tries 0/S and (volume) of 3.00 M sodium hydroxide solution, plus enough water to make up the total volume. Answer Tries 0/5 Post Discussion Send Feed
Need work step by step please! pH of a Buffered Solution Using tabulated Ka and Kp values, calculate the pH of the following solutions. Answer to 2 decimal places. K2 & Kb values may be found in Zumdahl, Chemical Principles 8th ed. Appendix 5 Tables A5.1, A5.3. A solution containing 1.5x10-1 M HOCI and 4.4x 10-1 M NaOCI 1pts Incorrect. Tries 2/5 Previous Tries Submit Answer 1000.0 mL of solution containing 11.0 g of CH3COOH and 20.0 g of CH...
Consider an object(an arrow pointing upward) placed in front of a converging lens. The image formed by the lens will be to the left of the lens. Submit AnswerTries 0/1 The object is an arrow pointing upward, the image formed by the lens will be an arrow pointing downward. Submit Answer Tries 0/1 Send Feedback Post Discussion
10. Calculate [H'], [OH'], pH for a 0.015 M aqueous solution of HCI. 11. Calculate [H'], [OH'], pH for a 0.45 M aqueous solution of NaOH. ヘ