Question

i) When magnesium ribbon is burnt in air, compound X is formed, which when
mixed in water forms compound Y. Then litmus test is performed with compound
Y.
a. Write chemical equations involved in above experiment.
b. Name compound X and Y formed in above experiment.
c. State the effect of litmus on compound Y.

Answer 1

Answer:

Amagnesium ribbon is burnt in oxygen to give a white compound ‘X’ accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound ‘Y’. Write a balanced chemical equation when ‘X’ is dissolved in water.

A. 2 Mg + O2→2MgO

B. 3 Mg + N2→Mg3N2

C. MgO + H2O→Mg(OH)2

D. Mg + H2O→Mg(OH)2