Question

Which of the following equations is not correctly formulated?

• A. 3Cu + 8HNO₃ (dil) ¾® 3Cu(NO₃)₂ + 2NO + 4H₂O
• B. 3Zn + 8HNO₃ (very dil) ¾® 3Zn(NO₃)₂ + 2NO + 4H₂O
• C. 4Sn + 10HNO₃ (dil) ¾® 4Sn(NO₃)₂ + NH₄NO₃ + 3H₂O
• D. As + 3HNO₃ (dil) ¾® H₃AsO₃ + 3NO₂

Answer 1

Answer: (B)

3Zn + 8HNO₃ (very dil) ¾® 3Zn(NO₃)₂ + 2NO + 4H₂O

Answer 2

With very dilute HNO₃ , Zn produces NH₄NO₃