Analytical Chemistry Question 233
Question: Phosphoric acid $ ( H_3PO_4 ) $ is tribasic acid and one of its salts is sodium dihydrogen phosphate $ ( NaH_2PO_4 ) $ . What volume of 1 M $ NaOH $ solution should be added to 12 g of sodium dihydrogen phosphate (mol. wt. 120) to exactly convert it into trisodium phosphate $ Na_3PO_4 $
[Kurukshetra CET 1998]
Options:
A) 80 ml
B) 100 ml
C) 200 ml
D) 300 ml
Show Answer
Answer:
Correct Answer: C
Solution:
$ 1\times V=\frac{12}{120}\times 2=200ml $ .
BETA
