Question

39. (a) Complete and balance the following equations :
(i) Mg + H2 0+?+ ? (ii) Zn +HCI →?+ ?
(b) An element 'X' on reaction with a dilute acid liberates a colourless gas which burns with a pop
sound
(i) Name the gas produced.
(ii) Substance formed by burning 'X' in air changes the colour of litums solution. What will be the
colour change?
(iii)Will element 'X' conduct electricity? Give reason for your answer.​

Answer 1

Answer:

(a) Mg + 2H2O  →  Mg(OH)2 + H2

    2 Zn + 2 HCI = 2 ZnCI + H2

(b) 1. HYDROGEN

    2.  It changes blue to red

   3. Yes, it conduct electricity because it consists H+ ions