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प्रश्न
The chemical equations are balanced to satisfy one of the following laws in chemical reactions. This law is known as:
पर्याय
law of conservation of momentum.
law of conservation of mass.
law of conservation of motion.
law of conservation of magnetism.
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उत्तर
Law of conservation of mass
Explanation:
The law of conservation of mass states that matter can neither be created nor destroyed during a chemical reaction. Consequently, the total mass of the reactants must exactly equal the total mass of the products. To obey this law, we balance chemical equations, ensuring that the exact number of atoms of each element is identical on both sides of the reaction.
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संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{BaCl2 + H2SO4 -> BaSO4 + HCl}\]
Translate the following statement into a chemical equation and then balance it.
Hydrogen sulphide gas burns in the air to give water and sulphur dioxide.
Correct and balance the following equation:
\[\ce{Ca + H2O -> CaOH + H}\]
Explain, with an example, how the physical states of the reactants and products can be shown in a chemical equation.
Explain the following reaction with one suitable example .
Decomposition reaction
Write your observations and name the product when
Iron nails are added to an aqueous solution of copper sulphate.
Write word equation for the following skeletal equation:
\[\ce{CO + O2 -> CO2}\]
Write symbolic representation for the following word equation and balance them :
Calcium carbonate → Calcium oxide + Carbon dioxide.
Balance the following equation. Also name the product formed.
`"KCIO"_3 → "KCI" +"O"_2`
Balance the equation stepwise.
NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)
Balance the following equation:
MnO2 + HCl → MnCl2 + H2O + Cl2
Balance the following equation:
HNO3 + H2S → NO2 + H2O + S
What information do the following chemical equations convey? Mg + 2HCl → MgCl2+ H2
Write the balanced chemical equation of the following reaction.
sodium chloride + manganese dioxide + sulphuric acid → sodium hydrogen sulphate + manganese sulphate + water + chlorine.
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of chlorine gas formed.
Give an example of a chemical equation in which two reactants form:
one product
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
Cl2 + 2H2O + SO2 → 4HCl + H2SO4
Which of the following is not a physical change?
Why should a magnesium ribbon be cleaned before burning in air?
