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प्रश्न
State the information provided by a chemical equation.
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उत्तर
Information provided by a chemical equation:
- It tells us the formulas and symbols of the reactants and products.
- It tells us the ratio in which substances react or are produced. If limitations are covered.
- It tells the physical state of substances i.e. solid, liquid, gas.
- Whether the reaction is endothermic or exothermic.
- Conditions for starting the reaction i.e. if the catalyst is needed or not.
- If reaction is reversible or not.
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संबंधित प्रश्न
Write balanced chemical equations for the reactions represented by word equations in the conditions for a chemical reaction.
Write a balanced molecular equation for the following word equation:
\[\ce{Lead nitrate + sodium chloride->Sodium nitrate + lead chloride}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{3NH3 + H2SO4->(NH4)2SO4}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]
Balance the following important equation:
CuSO4 + NaOH → Na2SO4 + Cu(OH)2
Balance the following important equation:
Al + Cl2 → AlCl3
Balance the following important equation:
Fe + HCl → FeCl2 + H2
Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
- Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773 K to form ammonia gas.
- Potassium hydroxide solution is treated with acetic acid to form potassium acetate and water.
- Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H2SO4.
- Ethene is burnt in the presence of oxygen to form carbon dioxide, water and release heat and light.
Which among the following change is exothermic or endothermic in nature?
Dissolution of ammonium chloride in water
Write the balanced equation for the following chemical reaction.
\[\ce{Hydrogen + Chlorine -> Hydrogen chloride}\]
