Calculate the pH of a 0.30 M solution of ethylammonium chloride, C2H5NH3Cl. For ethylammonium, pKa = 10.673.
Calculate the pH of a 0.30 M solution of ethylammonium chloride, C2H5NH3Cl. For ethylammonium, pKa =...
Calculate the pH at 25 °C of a 0.96 M solution of ethylammonium bromide (C2HNH2Br). Note that ethylamine (C2H3NH2) is a weak base with a pK, of 3.19. Round your answer to 1 decimal place. pH = II x ? |
Calculate the pH at 25 °C of a 0.16 M solution of ethylammonium bromide (C,HNH,Br). Note that ethylamine (C,H,NH) is a weak base with a p K, of 3.19 Round your answer to 1 decimal place. pH X
Calculate the approximate pH of an aqueous solution of ammonium chloride, NH4Cl , 0.03 M, and sodium acetate, CH3COONa, 0.12 M at 25°C. (Note: consider one decimal place for the pH answer.) pKa NH4+/NH3 = 9.24 pKa CH3COOH/CH3COO- = 4.76
A buffer solution contains NH3 0.20 M and NH4 + 0.30 M. Calculate the pH after 2.0 mmol of HCl is added to that solution. The volume of the solution is 50.0 mL and pKa (NH4 +) = 9.25 A 4.89 B. 8.92 C. 9.02 D. 9.07 E 9.58
The following mixture represents a buffered solution (a buffer): 0.30 M ethylamine (C2H5NH2) + 0.15 M ethylammonium bromi de (C2H5NH3Br) True False QUESTION 9 The following mixture represents a buffered solution (a buffer): 0.20 M hydrochloric acid + 0.13 M potassium chloride True False QUESTION 10 A buffer solution is made that is 0.25 M in HNO2 and 0.75 M in NaNO2. If Ka for HNO2 is 4.5E-4, what is the pH of the buffer solution?
Calculate the pH of a 0.254 M solution of ethylenediamine (H2NCH2CH2NH2). The pKa values for the acidic form of ethylenediamine ( H3NCH2CH2NH3 ) are 6.848 (pKa1) and 9.928 (pKa2). Calculate the pH of a 0.254 M solution of ethylenediamine (HzNCH2CHzNH2). The pK, values for the acidic form of ethylenediamine (H3NCH2CH2NH3) are 6.848 (pKa) and 9.928 (pKa2). Number pH-ID Calculate the concentration of each form of ethylenediamine in this solution at equilibrium. Number [H.NCH,CMNH]D Number Number
Calculate the pH of a 0.263 M solution of ethylenediamine (H2NCH2CH2NH2). The pKa values for the acidic form of ethylenediamine ( H3NCH2CH2NH3 ) are 6.848 (pKa1) and 9.928 (pKa2). AND Calculate the concentration of each form of ethylenediamine in this solution at equilibrium. Calculate the pH of a 0.263 M solution of ethylenediamine (H2NCH2CH2NH2). The pKa values for the acidic form of ethylenediamine (H3NCH2CH2NH3) are 6.848 (pKa1) and 9.928 (pKa2). Number pH3.72 Calculate the concentration of each form of ethylenediamine...
Calculate the pH of a buffer solution that is 0.116 M in C2H5NH2 (ethylamine) and 0.403 M in C2H5NH3Cl.
Calculate the pH of a 500.0 mL solution that is 0.30 M NH3 and 0.50 M NH4Br. For NH3, Kb = 1.76 × 10-5 .
6- Calculate the pH for 0.0133 M solution of ascorbic acid (CsH,O4COOH). The pka value for ascorbic acid is 4.10. ANS: .***.**.*. .... 7- Calculate the pH for 0.0119 M solution of phenol (C6H5OH). The pka value for phenol is 10. ANS:...