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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

Consider the equations given below and find the sum of x, y and z . (i) M g + x H N O 3 very dilute 5 % → M g N O 3 2 + H 2 (ii) C u + y H N O 3 ( d i l . ) → 3 C u N O 3 2 + 2 N O + 4 H 2 O (iii) I 2 + z H N O 3 → 2 H I O 3 + 10 N O 2 + 4 H 2 O

Correct answer

20

Step-by-step solution

(i) M g + 2 H N O 3 very dilute 5 % → M g N O 3 2 + H 2 P (ii) C u + 8 H N O 3 ( d i l . ) → 3 C u N O 3 2 + 2 N O Q + 4 H 2 O (iii) I 2 + 10 H N O 3 → 2 H I O 3 R + 10 N O 2 + 4 H 2 O Here x = 2, y = 8 and z = 10 Hence, x + y + z = 2 + 8 + 10 = 20

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