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प्रश्न
What do you understand by exothermic reactions?
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उत्तर
Exothermic reaction is the chemical reaction that produces heat along with products.
Example: CaO + H2O → Ca(OH)2 + Heat
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संबंधित प्रश्न
On what basis is a chemical equation balanced?
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are elements.
Rewrite the following information in the form of a balanced chemical equation:
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Balance the following equation. Also name the product formed.
CO2 + C → CO
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CH3COOH + NaOH →
Balance the equation stepwise.
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Zn + H2SO4 → ZnSO4+ H2
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Why should an equation be balanced? Explain with the help of a simple equation.
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chlorine + sulphur dioxide + water → sulphuric acid + hydrogen chloride
Write the balanced chemical equation of the following reaction.
copper + nitric acid → copper nitrate + nitric oxide + water
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.
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3CuO + NH3 → 3Cu + 3H2O + N2
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
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\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]
Molecules: 6.02 × 1023 + ______ `→` ______ + ______
