Question

Which of the following statements correctly describe an amphoteric substance?

Select all that apply. Check all that apply.
A. It can donate or accept a hydroxide ion.
B. It can act as either an acid or base.
C. It can donate or accept a proton.

Answer 1

22. If a Cr3+ (aq) solution is electrolyzed using a current of 15A, then what mass of Cr(s) is plated out after 3 days?

(MCr = 52 )

A. 400gm B. 800gm C. 700gm D. 2100gm