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प्रश्न
Substitute formulae for names and balance the following equation:
Calcium carbonate reacts with hydrochloric acid to produce calcium chloride, water and carbon dioxide gas.
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उत्तर
Ca(CO3) (s) + 2HCl (aq) → CaCl2 (aq) + H2O (l) + CO2 (g)
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संबंधित प्रश्न
Write the balanced chemical equation for the following reaction.
\[\ce{Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water}\]
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(a) CaCO3 → CaO + CO2
(b) 2H2O →2H2 + O2
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(d) C6H12O6 + 6O2 → 6CO2 + 6H2O
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FeCI2 + CI2 → FeCI3
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H2O + Cl2 → HCl + O2
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\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
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Word equation:
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one product
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With reference to a chemical equation state which of the statements 1 to 5 pertain to A or B.
A: Information provided by a chemical equation.
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- The nature of the individual elements.
- The speed of the reaction.
- The state of matter in which the substance is present.
- The completion of the reaction.
- The direction of the reaction.
Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
What is a product in a chemical equation?
