Question

Complete the given equations : (i) $Cu + 8HNO_3 \to 3Cu(NO_3)_2 +$ $+ 4H_2O$ (ii) $4Zn +10HNO_3 \to 4Zn(NO_3)_2 + 5H_2O+$ (iii) $I_2 + 10HNO_3 \to$ $+ 10NO_2 + 4H_2O$

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (B)

b

Answer 2

(i) ${3Cu +8HNO3_{(dil).}->3Cu(NO3)2}+$ $\underset{\text{(W)}}{ {2NO}} {+4H2O}$ (ii) ${4Zn +}$ $\underset{\text{(very dilute)}}{ {10HNO3}}$ ${(5\%)-> 4Zn(NO3)2 +5H2O \,+}$ $\underset{\text{(X)}}{ {N2O}}$ (iii) ${I2 +10HNO3 ->}$ $\underset{\text{(Y)}}{ {2HIO3}}$ ${+\,10NO2 +4H2O}$