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प्रश्न
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information not conveyed by the above chemical equation.
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उत्तर
Information not conveyed are :
- Time, a reaction takes to complete.
- About the concentrations of reactants and products.
- Speed of reaction.
- Changes in color occurring – during the reaction.
- Whether heat is given out or absorbed during the reaction.
- The physical state of reactants and products.
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संबंधित प्रश्न
Correct and balance the following equation:
\[\ce{N + H -> NH3}\]
What do you understand by exothermic reactions?
Write down what you understood from the following chemical reaction.
AgNO3(aq) + NaCI(aq) → AgCI ↓ + NaNO3(aq)
Balance the following equation:
Ca + N2 → Ca3N2
The chemical reactions in which heat is liberated are called endothermic reactions.
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – copper carbonate.
Balance the following simple equation:
N2 + O2 ⇌ NO
Write a balanced equation for the following word equation:
Potassium bicarbonate → Potassium carbonate + Water + Carbon dioxide
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
6NaOH + 3Cl2 → 6NaCl + NaClO3 + 3H2O
What are products? Explain with the help of example.
