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प्रश्न
What are the ways by which a chemical equation can be made more informative ?
उत्तर
A chemical equation can give more information in the following ways:
- The physical state of the reactants and products can be indicated by putting (s) for solid, (l) for liquid, (g) for gas and (aq) for aqueous state.
- Evolution or absorption of heat during the reaction can be denoted by adding or subtracting a heat term on the product side.
- Temperature, pressure and catalyst can be indicated above the arrow (→ or =) separating the reactants and products.
- Concentration of reactants and products is indicated by adding word (dil) for dilute and (conc) for concentrated before their formulae.
- By the sign \[\ce{-> or <=>}\] information about irreversible and reversible reactions can be obtained.
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संबंधित प्रश्न
What is a chemical equation ?
Differentiate between:
Reactants and products.
Balance the following equation:
`N_2+O_2 → NO`
Chemical equations suffer from a number of limitations. State the main limitations of a chemical equation.
Balance the following important equation:
ZnS + O2 → ZnO + SO2
Balance the following important equation:
NH3 + O2 → N2 + H2O (burning of NH3)
Which of the following is Not True with respect to the neutralisation reaction?
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
Identify the types of reaction mentioned above. Give one example for type in the form of a balanced chemical equation.
Complete and balance the following equation:
\[\ce{CuSO4 + NH3OH ->}\]
