Burning magnesium ribbon in air removes which of the following (i) oxygen (ii) nitrogen (iii)...

JAMB 2019

Burning magnesium ribbon in air removes which of the following
(i) oxygen (ii) nitrogen (iii) argon and (iv) carbon(iv)oxide?

A. i and iv only
B. i, ii, iii and iv only
C. i only
D. i and ii only

WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

Correct Answer: Option C

Explanation

The chemical reaction between magnesium ribbon and oxygen is a combustion reaction that produces magnesium oxide (MgO). Burning Magnesium ribbon in air removes oxygen, because as Magnesium burns in air, it reacts with oxygen in the air to form Magnesium oxide.

The chemical equation for this reaction is 2Mg(s)+O\(_2\)(g) → 2MgO(s)

There is an explanation video available below.

Previous Next

Go back to Chem classroom

Report an Error Ask A Question Download App