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प्रश्न
What happens when a piece of
- zinc metal is added to copper sulphate solution?
- aluminium metal is added to dilute hydrochloric acid?
- silver metal is added to copper sulphate solution?
Also write the balanced chemical equation if the reaction occurs.
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उत्तर
- Metal zinc displaces hydrogen component on reacting with dilute sulphuric acid (H2SO4) as H2 gas which is evolved
`"Zn"("s") + "H"_2"SO"_2("aq") -> "ZnSO"_4("aq") + "H"_2("g")` - Ammonia and hydrogen chloride gas. When vapours of ammonia and hydrogen chloride gas are mixed, the compound formed is ammonium chloride. It is a white solid.
`"NH"_3("g") + "HCl"("g") -> "NH"_4"Cl"("s")` - Copper displaces silver from the aqueous solution of silver nitrate.
`"Cu"("s") + 2"AgNO"_3("aq") -> "Cu"("NO"_3)_2("aq") + 2"Ag"("s")`
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संबंधित प्रश्न
What are the ways by which a chemical equation can be made more informative ?
Balance the following equation:
Zn + HCI → ZnCI2 + H2
Balance the following equation. Also name the products formed.
`Na + H_2 O → Na OH + H_2`
Balance the following equation. Also name the products formed.
`PbCO _3 → PbO +CO_2`
Balance the following equation. Also name the products formed.
`FeCI_2 + CI_2 → Fe CI_3`
What is the chemical equation. How is it represented?
Write a balanced molecular equation for the following word equation:
\[\ce{Lead nitrate + sodium chloride->Sodium nitrate + lead chloride}\]
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Balance the following equation:
\[\ce{H2S + Cl2->S + HCl}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{FeS + 2HCl + 2FeCl2 + H2S}\]
Balance the following important equation:
Al + Cl2 → AlCl3
Balance the following important equation:
Fe + HCl → FeCl2 + H2
Balance the following important equation:
Pb(NO3)2 + HCl → PbCl2 + HNO3
Balance the following important equation:
NH3 + O2 → NO + H2O (catalytic oxidation of NH3)
Balance the following important equation:
NH3 + CuO → Cu + H2O + N2
Balance the following important equation:
S + HNO3 (conc.) → H2SO4 + H2O + NO2
In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:
The following reaction is used for the preparation of oxygen gas in the laboratory
`2"KClO"_3("s") overset("Heat")underset("Catalyst")(->) 2"KCl"("s") + 3"O"_2 ("g")`
Which of the following statement(s) is(are) correct about the reaction ?
A solution of potassium chloride when mixed with silver nitrate solution, an insoluble substance is formed. Write the chemical reaction involved and mention the type of the chemical reaction.
Complete the co-relation:
CuI2 : Brown : : AgCl : ______
