Analytical Chemistry Question 82
Question: Which of the following gives a ppt. with $ Pb{{( NO_3 )}_2} $ but not with $ Ba{{( NO_3 )}_2} $
[CPMT 1979; MP PET 1997]
Options:
A) $ NaCl $
B) Sodium acetate
C) Sodium nitrate
D) Sodium hydrogen phosphate
Show Answer
Answer:
Correct Answer: A
Solution:
As $ Pb{{( NO_3 )}_2} $ is an ionic compound so the reaction is easy. $ Pb{{( NO_3 )}_2}+~2NaCl $
$ \to \ 2NaNO_3\ +\ PbCl_2 $ , but $ Ba{{( NO_3 )}_2} $ has a higher lattice energy, so no reaction takes place.
BETA
