For acetic acid in aqueous solution at 298 K the dissociation reaction is CH-C0ОН (аq) + H,0() = CH3C00¯(aq)+ H30*(aq) With pka = 4.75. %3D To simplify calculations, denote a = [CH3COOH], b=[CH3COO] and x = Consider a solution of total concentration c= 0.1 M. [H3O*]. %3D Use the two equations: bx Ka аnd a +b %3с a a.Solve for a as a function of Ka, c and x, then for b use b = c-a. b.Write an equation the fractional population of the acid fa, in terms of K and x, by substituting results of point a below: fa = %3D a a+b Of course, fb = b/c = 1– fa.

A 6.3 X 10-3 m3 sample of helium gas stored at 298 K (25 °C) and 1.0 X 105 Pa pressure is transferred to a 2.0 X 10-3 m3 tank and maintained at a pressure of 2.8 X 105 Pa. What temperature is needed to maintain this pressure?

181°F Which statement describes the overall relationship between volume and pressure? Esc O exponential O negative linear O direct O positive linear Partly sunny F2 -0- 2 F3 #M 3 F4 $ 4 F5 % 5 F6 Search -F7 6 F8 & 7 F9 * 8 F10 9 & 09 F11 S 1 0 F12 G Prt Sc

Given: (V1/n1)=(V2/n2) P1V1= P2V2 (V1/T1)=(V2/T2) P1/T1 = P2/T2 PV=nRT R=0.0821 atm•L/mol•K A flexible container at an initial volume of 6.13 L contains 3.51 mol of gas. More gas is added until the final volume is 19.1 L. Assuming constant temperature and pressure, calculate the number of moles added to the container.