Advertisements
Advertisements
प्रश्न
Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name (i) oxidising agent, (ii) reducing agent, in this reaction.
उत्तर
The balanced chemical reaction is as follows:
ZnO + C → Zn + CO
(i) Oxidising agent: ZnO
It oxidises C to CO.
(ii) Reducing agent: C
It reduces ZnO to Zn.
APPEARS IN
संबंधित प्रश्न
State one characteristic of the chemical reaction which takes place when quicklime is treated with water
Name the type of chemical reaction shown by the following equation:
2Mg+ O2 → 2MgO
Write your observation for the following chemical reaction and name the product formed :
When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of acid required.
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – mercury [II] oxide.
Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Pressure
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
What is the indications of the arrow between the reactants and the products and of the arrow pointing downwards at the end.
Balance the following simple equation:
NO + O2 → NO2
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write the number of atoms of various elements in the reactants and products.