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QUESTION 5 Which pair could not form a buffer? (*hint: what type bf acid do you...
Which pair of substances will form a buffer solution? OHBr, NaBr O HNO2, HCI HCI, NaOH KF, NaOH HClO2, NaClO2
QUESTION 6 Which pair listed below could be used to make a buffer solution? NH3 and HCIO2 HCIO3 and NH3 HClO3 and HClO2 H2PO4 and H3PO4 H2S and H3PO4 H3PO4 and p3-
help please asap please Question 36 (1 point) What is the pH of a buffer made by combining 0.114 M nitrous acid and 0.204 M sodium nitrite? The Ka of nitrous acid, HNO2, is 4.5*10-4 Your Answer: Answer Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NaNO2 NH4Br KCI Question 34 (1 point) Between HCIO3 and HIO3, which is stronger and why? OHCIO3 is stronger because chlorine is more electronegative than iodine. HCIO3...
3.(16.3) Identify all the correct statements about an acid-base buffer solution. I. It can be prepared by combining a strong acid with a salt of its conjugate base. II. It can be prepared by combining a weak acid with a salt of its conjugate base. III. It can be prepared by combining a weak base with its conjugate acid. IV. The pH of a buffer solution does not change when the solution is diluted. V. A buffer solution resists changes...
Buffers 1. Indicate which of the following pairs of compounds could be used to make a buffer solution by placing an X in the appropriate column. Buffer Solution | Not a Buffer Solution Pair of Compounds HF and Cl H.COs and OH HNO2 and NO NHa and NH L 2. Write out the reaction of acetic acid CH.COOH reacting with water. 3. What is the pH of a buffer solution in which the (CH3COOH) is 0.229 M and the (CH...
please answer number 5 and 6 5. The buffer range for a given weak acid/conjugate base pair is pK, 11. Explain why. 6. A weak triprotic acid, HZZ has the following K, values: Ki = 1.4 x 104 K = 9.7 x 10-7 K 5.3 x 109 a. Write the NIE associated with each Ka value. b. Of the four weak acid species: H.Z, H,Z, HZz"; which two could be used to prepare a buffer of pH = 3.55? Explain....
Question 31 (1 point) Which sets would form a buffer? HCl and NaCl HNO2 and NaNO2 NH4NO3 and HNO3 NH4NO3 and NH3 o BE 66 F9 F10 F11 F12 ( 5 6 7 8 9 0
3. To make a buffer solution, you can start with a solution of a known number of moles of the base form (A) and add a strong acid until you have neutralized the correct number of moles of the base to have the correct A HA ratio for the buffer you require. For the example using HF in the background information: a. How many moles of the base form (A) are required to start? HINT: The acid form (HA) will...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is called its conjugate base. What base of the hydronium ion, HO? B)HO C)HO D)H E HO'has no conjugate base. Answer: acid-base pair? 38) For the reaction shown below, which of the following is a conjugate acid A)CHsN, H:0 B) CsH,N, CsH,NH' C)...
please help as soon as possible ergent Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NH4B NaNO2 OKCI Question 36 (1 point) What is the pH of a buffer made by combining 0.136 M nitrous acid and 0.176 M sodium nitrite? The Ka of nitrous acid, HNO2. is 4.5x10-4 Your Answer: Answer Question 37 (1 point) iron to formirani oxide Question 33 (1 point) What is the pH of a 0.033 M solution...