When a magnesium ribbon is burned in the presence of air using a heat source like a spirit lamp, it undergoes a combustion reaction.
Magnesium (Mg) reacts with oxygen (O2) present in the air.
The balanced chemical equation for this reaction is:
$ 2Mg_{(s)} + O_{2(g)} \rightarrow 2MgO_{(s)} $
The solid product formed is magnesium oxide (MgO).
Therefore, burning magnesium ribbon forms magnesium oxide.
Comparing this with the given options:
The correct product is Magnesium oxide.
During an experiment, iron nails are placed in copper sulphate solution, and a reddish-brown deposit forms on the nails. What does this observation demonstrate about the type of chemical reaction and the substances involved?
In the reaction Na2SO4(aq) + BaCl2(aq) → BaSO4(*) + 2NaCl(aq), what will be the actual physical state that can replace (*)?
A student mixes aqueous solutions of barium chloride and sodium sulphate. A white curd-like substance forms instantly. What type of chemical reaction is primarily responsible for this observation?
In a laboratory, copper sulphate solution reacts with iron filings, causing a colour change and the deposition of a new metal. Which statement correctly explains the reason for this reaction?
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
Oxygen cannot be obtained by which one of the following methods?
Which of the following statement is correct?
I. Insoluble salt is obtained by precipitation reaction.
II. Addition of oxygen or loss of hydrogen is called oxidation.