Analytical Chemistry Question 259
Question: 0.75 g platinic chloride of a mono- acidic base on ignition gives 0.245 g platinum. The molecular weight of the base is
Options:
A) 75.0
B) 93.5
C) 100
D) 80.0
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Apply the formula M.wt $ =\frac{Acidity}{2}( \frac{wtofPtsalt\times 195}{wtofPt}-410 ) $
$ \therefore M.wt=\frac{1}{2}( \frac{0.75\times 195}{0.245}-410 )=93.5 $
BETA
