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प्रश्न
A magnesium ribbon is burnt in oxygen to give a white compound ‘X’ accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound ‘Y’.
- Write the chemical formulae of X and Y.
- Write a balanced chemical equations when X and Y are dissolved in water.
उत्तर
- The Compound ‘X’ is magnesium oxide (MgO). The compound ‘Y’ is magnesium nitride (Mg3N2)
- `underset((X))("MgO"("s")) + "H"_2"O"("l") -> "Mg"("OH")_2("s")`
`underset(("Y"))("Mg"_3"N"_2("s")) + 6"H"_2"O"("l") -> 3"Mg"("OH")_2("s") + 2"NH"_3("g")`
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संबंधित प्रश्न
Differentiate between:
A balanced and an unbalanced chemical equation.
Balance the following equation:
\[\ce{Fe + H2O⇌Fe3O4 + H2}\]
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NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
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Pb(NO3)2 + NaCl → NaNO3 + PbCl2
Balance the following important equation:
\[\ce{Pb3O4 + HCl -> PbCl2 + H2O + Cl2}\]
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NH3 + O2 → N2 + H2O (burning of NH3)
Which of the following are combination reactions?
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- `4"Al" + 3"O"_2 -> 2"Al"_2"O"_3`
- `"Zn" + "FeSO"_4 -> "ZnSO"_4 + "Fe"`
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- Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773 K to form ammonia gas.
- Potassium hydroxide solution is treated with acetic acid to form potassium acetate and water.
- Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H2SO4.
- Ethene is burnt in the presence of oxygen to form carbon dioxide, water and release heat and light.
Write the balanced chemical equation for the following reaction
Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cu2I2), liberates iodine gas and also forms potassium sulphate.
Complete and balance the following equation:
\[\ce{C2H5COONa + NaOH ->[\Delta][CaO]}\]
