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प्रश्न
Write word equation for the following skeletal equation:
\[\ce{Ca + O2 → CaO}\]
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उत्तर
\[\ce{Calcium + Oxygen → Calcium oxide}\]
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संबंधित प्रश्न
Giving examples, state the difference between balanced and unbalanced chemical equations.
What is meant by chemical reaction? Explain with the help of an example.
A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate Y. Metal X is used in making electric wire and alloys like brass.
(a) What do you think metal X could be?
(b) Write the name, formula and colour of salt XSO4.
(c) What is the blue precipitate Y?
(d) Write a chemical equation of the reaction which takes place when salt XSO4 reacts with sodium hydroxide solution. Give the state symbols of all the reactants and products which occur in the above equation.
Balance the following chemical equation:
Write symbolic representation for the following word equation and balance them :
Iron + Sulphur → Iron sulphide.
Balance the following equation :
Fe + O2 → Fe3 O4
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
2H2 + O2 → 2H2O
Give word equation for the following chemical reaction and give the names of the product formed.
\[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]
Balance the following simple equation:
Zn + HCl → ZnCl2 + H2
Balance the following simple equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
