# 3,8,9 esep donates a Short Answer Questions: Worth 3.5 points each 1. In the reaction...
2 Short Answer Questions: Worth 3.5 points each 1. In the reaction H:CO, + HO HCOS + H0", the Bronsted acids are a. H-COs and H:O 5. H O" and H:CO c. HCOs and H:COs d. H:COs and HCOs 2. Which one of these statements about strong acids is trac All strong acids have H atoms bonded to electronegative oxygen atoms Strong acids are 100 % ionized in water Strong acids are very concentrated acids Strong acids produce solutions with...
#3, 8,9 Short Answer Questions: Worth 3.5 points each 1. In the reaction HECO + HO HCO + H.Othe Bronsted acids are a. H.COs and HO HOand H.CO. c. HCO, and H.CO, d. H:CO, and HCO 2. Which one of these statements about strong acids ist ? a. All strong acids have H atoms bonded to electronegative oxygen atoms b. Strong acids are 100% ionized in water Strong acids are very concentrated acids d. Strong acids produce solutions with a...
38. A buffer solution is 0.40 M N Kb for NH3 is 1.8 x 10 38. Abre olution is 0-40 M N11 and 0.60 NHộ an 0,60 M NHẠC. and 0.00 4) Calculate the ph for the buffer system kw Kakba PH- pka leo ENHI 1 1. XD INHA KA Ich PH 3 1.8x10-5 -5.56x10 10 P log (5,56x10") + log (0.40) H-9.15+ (-0.18) PH- 9.03 alculate the pH of the solution after adding 0.00600 moles of NaOH to 400.0...
i want answer to all questions please Answer: 29) Consider the following generalized buffer solution equilibrium: When a small amount of a strong base such as sodium hydroxide is added to the solution, which of the four species shown would experience an increase in concentration? A) BH B)H C) HO D)B E None of the species would increase in concentration. Answer: ( 30) What is true about a solution whose pH is less than 7 at 25°C? A) It has...
1. Write the equations for the reaction of the following Bronsted acids with water: (a) H2S (b) HC2O4- (c) HSO3- 2. Write equations for the reactions of the following Bronsted bases with water: (a) PO4 3- (b) N2H4 (c) H2C6H5O7- 3. In each of the following questions, assume that there is no volume change when HCl is added to water in part (a) or the phosphate buffer in part (c). (a) Calculate the pH when 0.129 moles of HCl are added...
In each of the following questions, assume that there is no volume change when HCl is added to water in part (a) or the phosphate buffer in part (c). (a) Calculate the pH when 0.052 moles of HCl are added to 1.000 liter of water. (b) What is the difference between the pH of pure water (pH 7.00) and the pH of the solution after HCl was added? (c) Calculate the pH when 0.052 moles of HCl are added to...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-] = 3.5 x 10-2M (c) pOH = 10.5 3. What is the pH of a 0.10 M solution of HCIO4? (A strong acid) 4. Write the dissociation reaction and the corresponding K, expression for the following acids in water. (a) H3PO4 (b) C&H OH 5. Write the reaction and corresponding Ko expression for each of the following bases in water. (a) NH3 (b) PO4...
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)...
TA only Technique points Activity 1 Check 1: Estimated pK, for acetic acid Operational definition for buffer: Based on these data, why are weak acids and not strong acids used in buffers? Activity 2: How much does pH change when 1 drop NaOH is added to distilled water? How much does pH change when 1 drop HCl is added to distilled water? Why is the measured pH of distilled water usually not exactly 7.0? Activity 3 Check 2: How many...
7. In each of the following questions, assume that there is no volume change when HCl is added to water in part (a) or the phosphate buffer in part (c). (a) Calculate the pH when 0.021 moles of HCl are added to 1.000 liter of water. (b) What is the difference between the pH of pure water (pH 7.00) and the pH of the solution after HCl was added? (c) Calculate the pH when 0.021 moles of HCl are added...