![Answen C) 2.5x10 %) = [041] pOH = -log (2.5x10.) = 3.602 - pH = 14- 3.60 = 10.397 [H +) = 10-10.397 = 4x16 (M) [) = 6:15x10](http://img.homeworklib.com/questions/cc5e0b00-c2c8-11ea-9d5d-6b149acc8a27.png?x-oss-process=image/resize,w_560)
![♡ [ON] = 4.2 xcötime) poH = -log (4.2 x 10) = 3.37 pH = 14-3.37 = 10.62 .: (A+) = $115 10:62 = 2.39 xió m. - 1.2 polt = 12](http://img.homeworklib.com/questions/ccecc8e0-c2c8-11ea-b079-1b2150d931e1.png?x-oss-process=image/resize,w_560)
![s kae [H*) [A-] 217A) ar Kaz (0.0025x0.35) fo.10 380.38) 8:35-818825x0-35 0.35 -0.0025x20:35 ~ 0.35 [because ao Carors is too](http://img.homeworklib.com/questions/cd788600-c2c8-11ea-9c75-23465b8c100e.png?x-oss-process=image/resize,w_560)
please help solve both parts, thank you!! 7. Using a calculator, calculate the following parameters and...
8. Using a calculator, calculate the following parameters and fill-in the spaces provided (8 pts) [H+] [OH-] pH pOH 2.5 x 10-4 M 0.00375 M 1.0 x10-6 M 6.65 x 10-3 M 2.68 4.25 x 10-4 M 1.14 12.00 3.38 0.0000015 M 10.23 1.0 x 10-1 M 5.55 x 10-5 M
please help with numbers 7, 8 and 9 showing work
7. If H.PO, has K. -6.83 x 10', and H.CO, has K, -5.8 x 10", which is the weaker acid? Circle your answer and explain how you know. (pt) 8. For a solution with pH = 9.74, calculate the following: 3ps) [OH) = pOH - 9. (pes total) a. A solution of a weak acid with concentration - 0.11 M. is 8.8 % ionized. Calculate its K, value b. Calculate...
(8 pts) Comparing dissociation constants, circle the strongest base in the following pairs. You must justify your reasoning and show any calculations to receive credit. 5. Circle the strongest base in the pair: A. CsHsN and NHs and (pyridine and ammonia bases) Justification: B. PO. and AsO. and (phosphate and arsenate) Justification: 6. (10 pts) Calculate Ka of a weak acid given that a 2.3 M HA solution has a pH of 1.55. Ka: 7, (10 pts) Calculate the pH...
Calculate the pH, [H3O+], [OH-], and pOH for 0.25 M HF.
Is
this acidic, basic, or neutral?
Complete the following chart with the appropriate responses. Solution pH [H301 Он] POH Acidic, Basic, or Neutral Shong acid 0.15 M HCI -log(0.15) 0.824 10.15m 14.0-0.824 13.176 strong acid -log(2.5.10-) 2.5 x 10 - MHCI 4.600 14.0-4.60 9.4 2.5*10 weak acid 0.25 M HF
a) Set up an ICE table and calculate the pH of a solution that is 0.150 M propanoic acid, HC3H5O2. Ka = 1.30 x 10-5 for this weak acid. Calculate the % dissociation and justify whether or not "x" can be neglected. b) Another solution is 0.150 M of the conjugate base, sodium propanoate (NaC3H5O2). Calculate pOH and then pH for this basic solution. Use Ka from part (a). c) What would the pH of the acidic solution in part...
3. Answer the following questions about the general weak acid, HA (aq): a. Calculate the percent dissociation of 0.500 M HA if the K, value of HA is 6.88 x 106 b. If the percent dissociation of 0.100 M solution of HA is 3.59%, calculate the K value for HA. c. If the pH of a 0.0100 M solution of HA is 4.55, calculate the K value of HA. NOTE: The acid, HA in parts a, b, and c, is...
Calculate and fill in the following information and indicate whether the solution is acidic, 4 basic, or neutral. (2 pts. each) You must show work in order to receive full credit. acidic, basic, or neutral [H3o] OH] pH POH 1.98 x 10 a) b) 8.30 (You must show work in order to receive full credit for mathematical problems.) (8 pts.) 5. Lactic acid (HCaHs03, K 1.38 x 10"), which occurs in sour milk and foods such as sauerkraut, is a...
Please help if you know how to solve any of the questions 5,6,7,
and 8.
5. pts) Which of the following statements is true regarding a 0.10 M solution of a weak acid HA? a) The pH is 1.00 d) The pH is greater than 1 6. (6 pts) At 25 °C, K, for HF 3.5 x 104. Calculate K, for F. 7. (6 pts) At 25 c, K, for trimethylamine 6.5 x 103. Calculate K, fortrimethylammonium ion, (CHs) NH....
7. If H,PO, has K, -6.83 x 10, and Hco, has K,-5.8x 10", which is the weaker acid? Circle your answer and explain how you know. (Ipt 8. For a solution with pH 9.74, calculate the following: (3pa) [H'] [OH] pOH- 9. (2pas total) a. A solution of a weak acid with concentration 0.11 M. is 8.8 % ionized. Calculate its K, value. K, b. Calculate the K, value of a 0.060 M solution of a monoprotic acid with [H']...
please answer both 12 and 13! and explain, thank you!!
12). (4 pts) Lactic acid builds up in has a pH of 1.9. What is the K, for the a In our muscles after a workout. A solution of 0.2 M lactic acid OR •X A 1.oxloly A) 0.187 B) 0.013 C) 8.5 x 10" D) 3.2 x 10 E) 1.6 x 10" 14 POH 13. ( 4 pts) Caffeine, a stimulant in coffee and tea, is a weak base...