CHEM 116 Lecture Powerpoint Rutgers

Table 16.3 page 541 11.1 What is the pH of a 0.5 M HF solution (at 250C)? [H+][F-] = 7.1 x 10-4 Ka = HF (aq) H+ (aq) + F- (aq) [HF] HF (aq) Initial (M) 0.50 H+ (aq) + F- (aq) 0.00 0.00 Change (M) Equilibrium (M) -x 0.50 - x +x x Ka < 1 +x x 0.5

Table 16.3 page 541 11.1 What is the pH of a 0.5 M HF solution (at 250C)? [H+][F-] = 7.1 x 10-4 Ka = HF (aq) H+ (aq) + F- (aq) [HF] HF (aq) Initial (M) 0.50 H+ (aq) + F- (aq) 0.00 0.00 Change (M) Equilibrium (M) -x 0.50 - x +x x Ka < 1 +x x 0.5

Equilibrium is a state in which there are no observable changes as time goes by. Chemical equilibrium is achieved when: the rates of the forward and reverse reactions are equal and the concentrations of the reactants and products remain constant Ph

A phase is a homogeneous part of the system in contact with other parts of the system but separated from them by a well-defined boundary. Solid phase - ice 2 Phases Liquid phase - water 23.1 Intermolecular Forces Intermolecular forces are attracti

percent ionization = Ionized acid concentration at equilibrium Initial concentration of acid x 100% For a monoprotic acid HA Percent ionization = [H+] x 100% [HA]0 = initial concentration [HA]0 11.7 11.11 The common ion effect is the shift in

NAME_SECTION_ GENERAL CHEMISTRY 116 SPRING 2004 EXAM 1 2/16/2004 Answer all questions on these sheets, show ALL work for non-multiple choice problems to receive full credit. THE FOLLOWING EQUATIONS AND CONSTANTS MAY BE NEEDED. = MRT, b = b.m, f =

Page 1 General Chemistry 116 Exam 2 NAME _ SECTION _ 100 points. Answer all questions on these sheets showing all work for NON-multiple choice problems. NO credit will be given for answers that do not show all the work required. MULTIPLE CHOICE 1. Ca

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