P-Block Elements Ques 557
Question: In which of the following, a salt of the type $ KMO_2 $ is obtained?
Options:
A) $ B_2H_6+KOH(aq)\to $
B) $ Al+KOH( aq )\to $
C) Both
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
$ B_2H_6+2KOH+2H_2O\to \underset{\begin{smallmatrix} Potassium \\ metaborate \end{smallmatrix}}{\mathop{2KBO_2}}+6H_2 $
$ 2Al+2KOH+2H_2O\to \underset{\begin{smallmatrix} Potassium \\ metaaluminate \end{smallmatrix}}{\mathop{2KAlO_2}}+3H_2 $
