please explain! Qs (10-18, Acid/base equilibrium, Multiple Choice) 10) (3 pts) What is the pH of...
can someone please explain the answers by showing steps please? i have an exam tommorow 18. Novocaine, used as a local anesthetic in dentistry, is a weak base (at 25 °C.K. = 8.91 x 10“). What is the ratio of the concentration of the base to that of the acid in the blood plasma (pH = 7.40) of the patient? (Base): (acid) = ? (Note: For example, if (Base)/(acid) -0.25 then it's a 1:4 ratio but (Base)/(acid) = 4 then...
please explain how you got these answers!! and me 17) (5 pts) Calculate the pH of a solution that is 0.15 Min ammonia (NH3) and 0.40 ammonium chloride, given the ionization constant of the base, kb, NH3 = 1.76 X 10 equilibrium reaction: NH3(aq) + H20 (1) 2 NH4(aq) + OH' (aq) A) 5.18 B) 8.82 C) 9.25 D) 9.50 E) 9.63 18) (5 pts) By far the most important buffer for maintaining acid-base balance in the blood is the...
Acid/Base Study Packet Some Simple Acid/Base problems for you ... Calculate the pH of the following solutions: (Show ALL of your work) a. 2.3 x 10-2 M HNO3 b. 0.065 M Ba(OH)2 c. 2.55 M NaOH d. 0.025 M Naci e. 0.00086 M Al(OH)3 (assume 100% dissociation) f. 3.4 x 102 M acetic acid K= 1.8 x 10-5 g. 5.3 x 10-3 M formic acid K = 1.8 x 104 h. 4.6 x 10-4 M pyridine Kb = 1.9 x...
For each of the following strong base solutions, determine [OH−],[H3O+], pH, and pOH. A) 8.75*10^-3 M LiOH: [OH-] & [H3O+] B) pH & pOH C) 1.13*10^-2 M Ba(OH)2: [OH-] & [H3O+] D) pH & pOH E) 2.0*10^-4 M KOH: [OH-] & [H3O+] F) pH & pOH G) 5.1*10^-4 M Ca(OH)2 H) pH & pOH
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...
What is the equilibrium pH of an initially 0.91 M solution of the monoprotic acid 3-chloropropanoic acid at 25°C (Ka = 7.8 x 10-5)? a. 7.00 b. 5.23 c. 1.77 d. 12.23 e. 2.07 Please provide a step-by-step solution! :)
Please explain throughly The indicator congo red is at pH = 1 and red at pH = 14 and has pK_a = 4.1. Based on this blue information a. it would be a good choice for a strong acid strong base titration b. it is blue at pH = 4 c. its end point occurs at pH = 9.9 d. it is red at pH = 3 e. it would be a good choice for a strong acid weak base...
i need help with these questions please. Which acid is the strongest? Multiple Choice Hydrogen sulfate ion HS04– (Ka = 1.2 x 10-2 Hydrocyanic acid HCN (KA = 4.9 x 10-10, Hydrofluoric acid HF (Ka = 7.2 x 10-4) Ammonium ion NH4+ (ka =5.6 10-10) Which solution has the highest pH? Multiple Choice 12., 18- o 4.3 x 108 мон o 10 х 10-7м-он o 51 х 10-2м Но* o 19 х 10-8м-он o 10 х 10-2М Н30* Saved The...
24A) 40mL of 0.2 M formic acid is titrated with a strong base (NaOH= 0.5 M). Determine the pH before any base has been added. Please show steps and please explain why the answer is what it is. 24B) The 40mL 0.2 M formic acid is titrated with a 6.0mL of strong base. Here NaOH can be treated as a conjugate base and formic acid is the acid. please show steps and explain! Us (24-25, Acid/base, aqueous equilibrium) 24A) (4...
please explain 2. (A) Draw the products of the acid/base reaction, (B) determine the position of the equilibrium, (C) use curved arrows to show the mechanism of the reaction and (D) briefly answer "Would water be suitable to protonate the carboxylic acid?". (8 pts) H-O + F3C H