A.) pH = 7.5 B.) [H3O+] = 5.0 x 10^-5 C.) [OH-] = 2.0 x 10^-8
D.) more than one correct response
E.) no correct response
2007-04-23 16:46:10 · 5 answers · asked by jonblaz222 1 in Science & Mathematics ➔ Chemistry
A) When pH > 7 the solution is basic
B) [ H3O+ ] = 5.0 x 10^-5 >> pH= - log 5.0 x 10^-5 = 4.30 acid solution
C) [OH - ] = 2.0 x 10^-8 >> pOH =7.7
pH = 14 - pOH = 6.3 . It is an acidic solution
2007-04-23 16:54:12 · answer #1 · answered by Anonymous · 1⤊ 0⤋
A) the pH is 7.5 which is basic
B) -log[H30+] = pH, so -log[5.0x10^-5] = 4.3, which is acidic!
C) -log[OH-] = pOH, so -log[2.0x10^-8] = 7.6989... and pOH + pH = 14... so 14-7.6989 = 6.30, which is also acidic!
so, B and C are both acidic, therefore the correct answer is D, more than one correct response.
2007-04-23 23:55:57 · answer #2 · answered by dude_youre_gettin_a_dale 2 · 0⤊ 0⤋
B and C are the same answer, so D is correct.
2007-04-23 23:49:50 · answer #3 · answered by cattbarf 7 · 0⤊ 0⤋
B is acidic, so is c
not A
2007-04-23 23:49:23 · answer #4 · answered by Anonymous · 0⤊ 0⤋
B and C
acidic: 1,2,3,4,5,6
neutral: 7
basic: 8,9,10.........
2007-04-24 00:38:34 · answer #5 · answered by Angel Girl 5 · 0⤊ 0⤋