Analytical Chemistry Question 112
Question: If $ NaOH $ is added to an aqueous solution of zinc ions, a white precipitate appears and on adding excess $ NaOH $ , the precipitate dissolves. In this solution zinc exists in the
[NCERT 1981; MP PET 1993]
Options:
A) Cationic part
B) Anionic part
C) Both in cationic and anionic forms
D) There is no zinc in the solution
Show Answer
Answer:
Correct Answer: D
Solution:
$ Zn^{2+}+2NaOH\to Zn{(OH)}_2+2Na^{+} $
$ Zn{{(OH)}_2}+2NaOH\to Na_2ZnO_2+2H_2O. $
BETA
