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QUESTION 11 You are given a solution that has both 1.2 M HCIO and 0.10 M...
QUESTIONS You are given a 1.22 M solution of HBrO (hyprobromous acid). The Kg for HBrO is 2.5 x 10-9 What is the pH of this solution? Note: "+x" and "-*" are negligible. No quadratic.
QUESTION 3 Calculate the pH of a solution that is 0.419 M HCIO and 0.422 M KCIO. Ka of HCIO is 3.0 x 10-8
QUESTION 7 You are given an unknown acid solution with a pH of 2.24 and a concentration of 0.500 M. What is the Ka of this unknown acid? Note: "*" and "x" for this are negligible. No quadratic. 3.9 x 10-6 1.1 x 10-2 7.AX 10-6 6.6 x 10-5 9.1 x 103 7.1 x 10-9
Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HCIO with 200.0 mL of 0.30 M NACIO The Ka for HCIO is 2.9 x 10-8 ANSWER: ODA 10/ 7.54 7.06 5.99 6.46 8.01
Question 14 QUESTION 13 What is the final pH if 36.0 mL of 0.15 M of NaOH is added to 90.0 mL of 0.80 M acetic acid? Ky for acetic acid is 1.8 x 10-5, CH3COOH(aq) + OH(aq) + H2O(l) + CH3COO (aq) Note: No quadratic. Need ICE table QUESTION 14 The Ksp for Mg(OH)2 is 1.8 x 10-11. What is the concentration, in M, of OH ions in a saturated solution of Mg(OH)2? 52x104 1.7×104 3.3 x 10-4 26x104
Question 13 QUESTION 13 What is the final pH if 36.0 ml. of 0.15 M of NaOH is added to 90.0 ml of 0.80 M acetic acid? Ky for acetic acid is 1.8 x 10-5 CH3COOH(aq) + OH" (aq) + H200) + CH3COO(aq) Note: No quadratic. Need ICE table QUESTION 14 The Ksp for Mg(OH)2 is 1.8 10-11What is the concentration, in M, of OH ions in a saturated solution of Mg(OH)2? 5.2 x 10-4 1.7×104 3.3 x 104 2.6x104
What is the pH of a 0.025 M NaNO2 (Kb = 2.2 x 10-11)? IMG 1179.jpg Which of these solutions will have the highest buffer capacity? 0.10 M H3PO4/0.10 M Na2HPO4 0.10 M CH3COOH/0.001 M NaCH3COO 0.10 M H3PO4/0.10 M NaH2PO4 0.10 M H3PO4/0.10 M Na3PO4 Which conjugate acid-base pair would yield a good buffer at pH 4.75? HNOz/NO2 (Kg = 4.5 x 10-4) HCIO/CIO-(Kg = 3.5 x 10-8) CH3CH2COOH/CH3CH2COO (Kg - 1.4 x 10-5) NH4+/NH3 (Kg = 5.6 x...
7. A sample of 0.10 M C6H5COOH(aq) (benzoic acid) solution is titrated with 0.10 M NaOH(aq) solution. What is the pH of the solution at the equivalence point? Ka(C6H5COOH) = 6.46 x 10-5 8. A sample of 0.10 M C6H5CH2NH2(aq) (benzylamine) solution is titrated with 0.10 M HBr(aq) solution. What is the pH of the solution at the equivalence point? Kb(C6H5CH2NH2) = 2.24 x 10-5
Question 22 (1 point) The K, of hypochlorous acid (HCIO) is 3.0 * 10-at 25.0 "C. Calculate the pH of a 0.0385 M hypochlorous acid solution (pH of a weak acid - with approximation, [H,0") Sort (K, Cal; where CHA is weak acid concentration) A) 9.53 B) 3.05 C) 6.52 D-3.05 E) 4.47 Question 23 (1 point) A particular first-order reaction has a rate constant of 1.35 "C. What is the magnitude of kat 75.0 "CIT 105 at 25.0 (Use...
See Periodic value in this experiment if a 5.00 molar HCIO solution has [ cids -CHEM 104 x pH and Weak Acids - Blackboarx + ard.com/webapps/blackboard/content/contentWrapper jsp?content_id-1392492_18.displayName=pH+and+Weak+Ads urse 07/31/20 9% This is a Numeric Entry question/ It is worth 1 point/ You have unlimited attempts / There is no attempt penalty 13 Question (1 point 1st attempt Feedback See Periodic Table See Hint Hypochlorous acid (HCI) is a weak acid. Calculate the value in this experimenti a 5.00 motor HCIO...