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प्रश्न
How will you indicate Endothermic reaction in a chemical equation?
उत्तर
Endothermic reaction is indicated by writing “heat” or “heat energy” or “energy” on the reactants’ side of a chemical reaction.
Example: N2 + O2 + Heat → 2NO
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संबंधित प्रश्न
Balance the given equation:
H2O2 
H2O + O2
Which of the following does not involve a chemical reaction?
An acid which can decolourise purple coloured potassium permanganate solution is:
(a) sulphuric acid
(b) citric acid
(c) carbonic acid
(d) hydrochloric acid
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.
Balance the following equation. Also name the product formed.
`"H"_2 +"CI"_2 → "HCI"`
What do the following symbol stand for?
2H2
Balance the following equation:
PbO + NH3 → Pb + H2O + N2
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of chlorine gas formed.
Write the name and molecular formula of a carbon compound having its name suffixed with "-ol" and having two carbon atoms in its molecule. With the help of a chemical equation indicate what happens when this compound is heated with excess conc. H2SO4.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
PbO2 +4HCl → PbCl2 + H2O + Cl2
