Question

Please explain so that I can understand this concept!

Out of the following two 0.10 M aqueous solution groups, which TWO have the HIGHEST pH? (PIck one from EACH grouping)

HNO2
KHCO2
NaI
NH4I
HI

LiOH
KHCO2
NaI
NH4I
HI (

Same thing as above) 0.10M, Pick one out of each grouping- which has the lowest pH?

HI
HF
KNO2
Al(ClO4)3
NH4Br


HF
NaCH3CO2
KNO2
Ca(ClO4)2
NaClO4

Answer 1

Out of the following two 0.10 M aqueous solution groups, which TWO have the HIGHEST pH? (PIck one from EACH grouping)

highest pH means, most basics

HNO2 --> acid, low pH
KHCO2 --> mid pH
NaI --> neutral
NH4I --> acidic in solution
HI --> acid
then, ignore all "acidic" and choose the bold one, since the pH are the highest

LiOH pertty basic,
KHCO2 mid basic,
NaI neutral
NH4I acidic
HI acidic

Same thing as above) 0.10M, Pick one out of each grouping- which has the lowest pH?
lowet pH means acidic so

HI --> pretty acidic
HF --> slightly acidic
KNO2 --> basic
Al(ClO4)3 --> slighly acidic
NH4Br --> slightly acidic


HF --> slihglty acidic
NaCH3CO2 --> slighltly basic
KNO2 --> slightly basic
Ca(ClO4)2 --> slightly acidic
NaClO4 --> neutral