Advertisements
Advertisements
प्रश्न
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Heat energy
Advertisements
उत्तर
Heat Energy:
On heating the reactants – the reacting particles, collide swiftly and with greater intensity.
Example:
Heat on zinc carbonate:
\[\ce{ZnCO3 ->[\triangle] ZmO + CO2 [g]}\]
APPEARS IN
संबंधित प्रश्न
Translate the following statement into chemical equation and then balance it.
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are elements.
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are products.
When potassium nitrate is heated, it decomposes into potassium nitrite and oxygen. Write a balanced equation for this reaction and add the state symbols of the reactants and products.
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
(a) Name the lead salt.
(b) Name the brown fumes.
(c) Write a chemical equation of the reaction involved.
Balance the following equation. Also name the products formed.
`"Mg" + "O"_2 → "MgO"`
Balance the following equation. Also name the product formed.
` "H"_2"O"_2 → "H" _2 "O" + "O"_2`
Write your observation and name the product when ron nails are added to an aqueous solution of copper sulphate.
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Is the equation given above a balanced equation. Give reasons.
Give word equation for the following chemical reaction and give the names of the product formed.
ZnCO3 → ZnO + CO2
