Question

What is the pet of 0.027 MHCI? The pH of 0.027 NHC3H30, 183.16. Why don't the two equimolar solutions of HCl and HCH,O, have the same ph? (Select all that apply) The K, of HC Hy is greater than that of HCI, soat equilibrium the concentration of Hyosons in a HC2H2O2 solution is less than in a HCl solution of the same concentration The K, of HCM0, is smaller than that of HCI, SO equilibrium the concentration of Hyo'lons in a HC,H, solution is less than in a HC Solution of the same concentration The conjugate base of HC130, C2H302". generates OH"lons in solution, thus lowering the total concentration of Holons At equilibrium, the HCl solution contains mainly undissociated HCI and only small amounts of H30. At equilibrium, the HC Solution contains mainly indissociated HICHO, and only small amounts of Hyo. What is the hydrorlum lon concentration in a solution with DH = 2.14? An unknown bottle of acid says 0.000010 N on the label. The measured pH is 5.00. This implies that the unknown acid has which of the following? K >> 1 • Kocal K1 Which of the acids below will have the lowest pH in a 0.000010 N solution of the acid? (Hint: Larger HCIO values favor products and smaller R, Values favor reactants.) HCO, HNO HSO4

Answer 1

What is the pH of 0.027 M HCI? 1) 1.57 The pH of 0.027 MHC H30, is 3.16. Why don't the two equimolar solutions of HCI and HC2H302 have the same pH? (Select all that apply.) The K, of HC2H302 is greater than that of HCI, so at equilibrium the concentration of Hy0+ ions in a HC2H302 solution is less than in a HCl solution of the same concentration The K, of HC2H30, is smaller than that of HCI, so at equilibrium the concentration of H3O+ ions in a HC2H30, solution is less than in a HCl solution of the same concentration The conjugate base of HC2H30, C2H302", generates OH"lons in solution, thus lowering the total concentration of Hotions At equilibrium, the HCl solution contains mainly undissociated HCl and only small amounts of Hot, At equilibrium, the HC H302 solution contains mainly undissociated HC2H30, and only small amounts of H30 What is the hydronlum lon concentration in a solution with pH = 2.147 M 0.00724 An unknown bottle of acid says 0.000010 M on the label. The measured pH is 5.00. This implies that the unknown acid has which of the following? K, >> 1 ka << 1 values favor products and smaller K values favor reactants.) Which of the acids below will have the lowest pH in a 0.000010 M solution of the acid? (Hint: Larger K HCIO HCO3 HNO HS04