Advertisements
Advertisements
प्रश्न
When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
उत्तर
Magnesium gets oxidised because oxygen is added to the substance (Mg). The chemical reaction is given as follows:
2Mg + O2 → 2MgO
APPEARS IN
संबंधित प्रश्न
Fill in the following blanks with suitable words:
The addition of hydrogen to a substance is called ........ whereas removal of hydrogen is called .......
Is oxidation an exothermic or an endothermic reaction?
Identify the substances that are oxidised and the substances that are reduced in the following reaction.
\[\ce{CuO(s) + H2(g) -> Cu(s) + H2O (l)}\]
Compare hydrogen with alkali metals on the basis of:
Oxide formation
State whether the following conversion is oxidation or reduction:
PbO2 + SO2→ PbSO4
Give two test for an oxidising agent.
Select the oxidising agent for the following reaction:
\[\ce{H2S + I2 -> 2HI + S}\]
Identify the reducing agent in the following reactions -
`"H"_2"O" + "F"_2 -> "HF" + "HOF"`
You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO3, ZnCl2 and water. In which of the above containers, can these solutions be kept?
In the redox reaction:
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
