Question icon
Grade 11Physical Chemistry

What volume of HNO3 is required that will convert one gram of of FeSF4. 7H20 into Fe 3+. Specific gravity of HnO3 solution is 1.05 gram per ml and it contains 12.6% weight by weight of HNO3. HNO3 is it self reduce to nitric oxide in the reaction

Profile image of Rankush
7 Years agoGrade 11
Answers icon

1 Answer

Profile image of Arun
6 Years ago
Fe 
2+
 +HNO 
3
​ 
 +H 
+
 ⟶Fe 
3+
 +NO+H 
2
​ 
 O
                 (+5) (+2)
Number of equivalents of HNO 
3
​ 
 = Number of equivalents of Fe 
+2
 
V×1.05× 
100
8
​ 
 ×21= 
278
1
​ 
 
Therefore, V=0.89 mL.
Hence, volume of HNO 
3
​ 
  required = 0.89 mL