Question

Show all steps and work please.

Which is not matched to its correct acid-base nature in (aq) a) KNO_3 - neutral b) NH_4 Cl - acidic c) NoNO_2 - basic d) KHSO_4 - basic

Answer 1

acid - base nature in aqueous solution:

a)

KNO3 is neutral, since K+ and NO3- will not form any hydrolysis products

b)

NH4Cl is acidic, since it donates H+ as follows

NH4Cl --> NH4+ + Cl-

NH4+ <--> NH3 + H+

c)

NaNO2 is basic since it will accept H+ as follows

Na+ + NO2-

NO2- + H2O <--> HNO2 + OH-

d)

KHSO4- is ACIDIC

sicne

K+ + HSO4- forms

Note that HSO4- is stronger acid than base

so

HSO4- <--< H+ + SO4-2

therefore

ACIDIC

choose D as false