Which statement is correct?
A ammonia is produced when an ammonium salt is warmed
with dilute HCl
B Amphoteric oxides are oxides of certain metals.
C a neutral solution doe not contain hydroxide ions.
D Soil with high pH can be neutralized by adding lime,
Ca(OH)2.
The answer is B. A and D are clearly wrong. But C is wrong here.
A neutral solution has pH of 7 means No H+ nor OH- ions. But its
wrong.What is a neutral solution then? and does it cintain
OH-.Please explain in the jusridiction of O-level.
Hello,
Indeed, option C is wrong.
A neutral ion actually contains the same concentration of OH-
and H+. It is the same concentration of OH- and H+ ion that result
in a pH of 7.
Regards,
Jonathan Leong CK