... CO2 (ktc) vo 400mL dung dch Ca(OH)2 thỡ thu c 5g kt ta Giỏ tr ca V l: A 3,36 hoc 1, 12 B 1, 12 C 1, 12 hoc 7,84 D 7,84 BT 10 8 Dn V (L) CO2 (ktc) qua 10 0mL dung dch Ba(OH)2 1M thỡ thu c 11 ,82g kt ... 3, 81 gam B 4, 81 gam C 6, 81 gam D 5, 81 gam BT 10 5 Cho 5,6L CO2 (ktc) tỏc dng vi 400mL dung dch NaOH thu c: A 21g NaHCO3 v 6g NaOH d B 13 ,25g Na 2CO3 v 6g NaOH d C 15 ,9g Na 2CO3 v 8,4g NaHCO3 D 15 ,9g ... = 10 -7 v Kw = [H+].[OH-] = 10 -14 b Ch s pH: pH = - lg[H+] hay [H+] = 10 -pH Vớ d: - Dung dch HCl 0,01M [H+] = 10 -2 pH = - lg[H+] = - Dung dch NaOH 0,001M [OH-] = 10 -3 [H+] = 10 -11 pH = 11 ...