Advertisements
Advertisements
Questions
What do you observe when magnesium ribbon is burnt in oxygen?
While burning a magnesium ribbon in air, state two observations of this activity.
Advertisements
Solution 1
Magnesium ribbon burns with a dazzling white light and produces a white powder, which is magnesium oxide.
Reaction can be represented as:
\[\ce{2Mg + O2 -> \underset{(white powder)}{2MgO}}\]
Solution 2
- Magnesium produces a dazzling white flame while burning.
- When magnesium burns, it reacts with oxygen to form a white, powdered material.
Notes
Students should refer to the answer according to their questions.
RELATED QUESTIONS
How will you obtain Silver chloride from silver nitrate.
Also give balanced equations for the reactions
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.
With reference to Acid explain with a suitable example of how the reactivity of the metals could be differentiated.
Select the correct answer for the statement given below:
A neutral oxide which does not react with an acid or a base to give salt and water.
Give a balanced equation for the following type of reaction:
A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.
In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.
Arrange the following as per the instruction given in the bracket:
Al, K, Mg, Ca (decreasing order of its reactivity)
