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प्रश्न
Differentiate between a ‘word equation’ and a ‘molecular equation’ with a suitable example.
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उत्तर
Word equation tells which substances react (take part) in the chemical reaction and which substances are produced whereas molecular equation symbols and molecular formulas are used for both reactants and products.
Example: When zinc reacts with dilute sulphuric acid, both being reactants, products produced are zinc sulphate and hydrogen gas, which are shown as below:
Word equation:
\[\ce{Zinc + Sulphuric acid->Zinc sulphate + hydrogen}\]
Molecular equation:
\[\ce{\underset{\text{Zinc}}{Zn}+\underset{\text{[Sulphuric acid]}}{H2SO4(dil)}->\underset{\text{[Zinc sulphate]}}{ZnSo4}+\underset{\text{[Hydrogen]}}{H2[g]}}\]
APPEARS IN
संबंधित प्रश्न
Write balanced chemical equations for the following word equation:
Calcium oxide + water → Calcium hydroxide
Balance the following equation:
\[\ce{Pb3O4->PbO + O2}\]
Balance the following equation:
\[\ce{CuO + NH3->Cu + H2O + N2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{N2 + 3H2⇌NH3}\]
Balance the following important equation:
K2Cr2O7 + HCl → KCl + CrCl3 + H2O + Cl2
Balance the following important equation:
Cu + HNO3 (conc.) → Cu(NO3)2 + H2O + NO2
Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
- It is an endothermic reaction
- It is an exothermic reaction
- The pH of the resulting solution will be more than seven
- The pH of the resulting solution will be less than seven
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
- Iron (III) oxide reacts with aluminum and gives molten iron and aluminum oxide.
- Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.
- Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.
- Ethanol is burnt in air to form carbon dioxide, water and releases heat.
Complete the missing component /variable given as x and y in the following reactions
`"Cu"("s") + 2"AgNO"_3("aq") -> "Cu"("NO"_3)_2("aq") + x("s")`
