Question

1. Magnesium ribbon is burnt in oxygen to give a white coloured compound A. When burning ribbon is placed
in an atmosphere of nitrogen, it continues to burn and forms compound B.
a. Write the chemical formula for A and B.
b. Write a balanced equation when A is dissolved in water.

2. On heating a blue coloured copper (II) nitrate in a boiling tube , copper oxide, oxygen and a brown gas is
formed:
a. Write a balanced chemical equation for the reaction.
b. Identify the brown gas formed.
c. Identify the type of reaction.

Answer 1

A

1. I think that compound a is MgO and compound b is Mg(NO3)2

2. MgO + H2o = Mg(OH)2

B

1. I dont know

2. SO2

3. Dont know

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