Oxalic acid dihydrate, `H_(2)C_(2)O_(4). 2H_(2)O(s)` is often used as a primary reagent to standardise sodium hydroxide solution. Which of these facts are reasons to choose this substance as a primary standard ?
I. It is diprotic.
II. It is a stable compound that can be weighed directly in air.
III. It is available in pure form.
A. III only
B. I and II only
C. II and III only
D. I, II and III
I. It is diprotic.
II. It is a stable compound that can be weighed directly in air.
III. It is available in pure form.
A. III only
B. I and II only
C. II and III only
D. I, II and III
Correct Answer – C