Question

Please explain

3. Which one of the following salt solutions is the most basic? (a) 0.05 M Nacio (b) 0.05 M NaC102 (c) 0.1 M NaClO (d) 0.1 M NaClO2 (e) 0.1 M NaC104

Answer 1

Order of acidity of acids are

HClO < HClO2 < HClO3 < HClO4

so the the basicity of conjugate base will be reverse order .

ClO4- will be weak base and ClO- will be strong base .

so order of basicity is

ClO- > ClO2- > ClO3- > ClO4- or  

NaClO > NaClO2 > NaClO3 > NaClO4

we have two types of NaClO solution 0.1 M and 0.5 M

obviously 0.1 M NaClO solution is more basic due to high concentration

answer is C . 0.1 NaClO