Question

A magnesium 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 form compound y.

a.Write the chemical formulae of x and y.

b.Write the balanced chemical equation when x is dissolved in water.

Answer 1

Answer:

$2mg + o2 - - - > \: \: 2mgo \: (balanced \: equation) \\ so \: x = mgo \\ 3mg + n2 - - - > mg3n2 \\ \: so \: y = mg3n2.$

Explanation:

Part 2. X is basic in nature as metal oxides address always basic. When it is dissolved in water, it forms an alkaline solution which turns red litmus blue.

$mgo + h2o - - - > mg(oh)2 \: (balanced \: equation).$

Answer 2

Answer:

2mg+ o2 --> 2MgO

(compound X)

MgO + N2 ----> Mg3N2 + o2

(compound Y)

balanced equation--

MgO + h2o ---> mg(oh)2