Question

A 0.685 M solution of a weak acid HA has a pH of 4.50. What is the percent ionization of HA in the solution? Submit Answer Tries 0/98 For the solution described above, what is the K,? Submit Answer Tries 0/98 This discussion is closed. Ote E o Type here to search 6

Answer 1

en Here weak deed HAL Ē H+ A H2O = 4 * tossa HA 0.685 Inshal Ad ein 0.685 -0.6852 0.6854 0.6854 < 096854 770 30 Here it coming from ho will be vay low se neglet Now , ka = cut2lAJ 2= ganisation CHAT ons tout = 10.6.8507 fologra ] - Coors -0.6854] = 0.685 a do and pH given = 4.50 pn = -log (ht] 4.50 = -log (ht] (int] = 3.16 *iors Ch+] = 0.685 4 = 3.168iors de 9:16 *10-5 Scanned with 685 CamScanner

do 4.61 x 10-5 per and to jonization= o.00461.). Now Ka= 0.685x2 1a 1 - a sl teeame & is van les a we can write 1-45l <5). than - دی 6- م عطر ہے = 0.685 x 4.61810-574 - 0.685 x 21125 x 10-10 = 145 xlo-9 cs Scanned with CamScanner