Question

10- M. What is the [H30'] in egg 23 The [OH) in a sample of egg whites is 6.3 x 10'M. What is the le IUM whites? A 6.3x10 M B 1.6x10M c.0x10-'M OD 1.0x10" 24 Which solution has the highest pH? 4.3x10-MH0B 1.0 x 10-M H30 C 1.9 X 10 M H20 D 1.0x10-²M 5.0+ 25 Which solution has the lowest pH? A 4.3x10-MH0+ B 1.9 X 10MH,0 C 1.0 x 10 M H20 D 1.0x 10-2MH0+ 26 If the [H3O'J in a cup of coffee is 1.0 x10 M, Calculate the [OH]? A 1,0x10°M B 1.0 x10 M C 1.0x10 "M D 1.0x10^M 27 If [H3O+] in blood sample is 4.0 x10 *M, what is the value of [OH)? D 3.5 x10 ⓇM A 2.5 x10°M B 3.5*10? 2.5 x10 M 28 In human blood, [OH] > [H30*), it means that blood is.........? A Neutral B Acidic cl Basic 29 Calculate the value of [H30*) in 0.0001 M HCl solution? A 1.0x10 °M B1.0x10ⓇM | 1.0 x10^M D. All of these D 1.0 x10 "M

Answer 1

23. EHct] [ou]a 1-0 x1614 loxlo! [tota lox2014 -=1.5878100M 6-34107 303 [ot] [1] : 1-6 XLOP pH = 772 V 24 pH109 Illy, ot] u) [Hot] =1.0 X107 CC [Hot] = 1-981058 (A) [Hot] = 4-3x108 / pH=-log (10x15)) (pH=-log (1.9 x108) pH = -log [Hot] (pH=7 pH = -log (4.3x108) pH = 7-37 1 [Hot] 1x102M Answer: [c] CIX102)=2 pH = -log e @ Hot = 1x107 pH= -log [Hot] [Hot] = 1.98106 1pH= -log ( 1X107) ③ [Hot] =4-3x108m 1 pH = -log (1-9x106) Iult. pH=7 pH= 10g (4.3x108) / pt = 5.722 Answer: lowest pH pH = 7.37 ③ [Hot] a 1x102 pita-log (1X10²) 22 Ср) 2 (20) [Hot] [ot] = 10x10! 10x1014 10x10 - xolm = [OH-] = 1:0x10ly 1x105 [Hot]

(27) [Hot] [OH-] = 10x10l4 2 loxioly loxioly - = 2.5x15 7M [Hot ] - 4x108 [ca Hint [Hot] > [OH- ] Acidic {ot] > [Hot] : basic [ Hz ot] = [OH-] : Neutral Answer: [OH-] > [ho] Blood Blood is basic [c] & Hel: strong acred = 100x104m {Hol] = [Hot] = o.oool M [c]