... a 45 b 22,5 c 14,4 d 11,25 52 Cho 18,4 gam hn hp gm phenol v axit axetic tỏc dng vi dung dch NaOH 2,5M thỡ cn va 100 ml Phn trm s mol ca phenol hn hp l phn trm no di õy? a 14,49% b 51,08% c ... 5,4 gam cht ng ng ca phenol n chc Cho dung dch X phn ng vi nc brom (d) thu c 17,25 gam hp cht cha ba nguyờn t brom phõn t, gi s phn ng xy hon ton Cụng thc phõn t cht ng ng ca phenol l: a C7H7OH ... hidroxyl n gc phenyl chỏy Y ta ch thu c CO2 v H2O cú s mol nh phõn t phenol c th hin qua cỏc phn v s mol oxi tiờu tn gp ln s mol ca ng ca phenol vi: Y Bit rng: Y phn ng vi KMnO to A Br2, NaOH B NaOH,...