Advertisements
Advertisements
प्रश्न
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
विकल्प
\[\ce{2H2(1) + O2(1) -> 2H2O(g)}\]
\[\ce{2H2(g) + O2(1) -> 2h2O(1)}\]
\[\ce{2H2(g) + O2(g) -> 2H2O(1)}\]
\[\ce{2H2(g) + O2(g) -> 2H2O(g)}\]
Advertisements
उत्तर
\[\ce{2H2(g) + O2(g) -> 2H2O(g)}\]
Explanation:
H2 and O2 are gases at room and elevated temperatures. The reaction is carried upon strong heating. At this temperature, H2O formed is in gaseous state.
APPEARS IN
संबंधित प्रश्न
Balance the following equation:
N2 + H2 → NH3
Write balanced chemical equations for the reactions represented by word equations in the conditions for a chemical reaction.
Balance the following equation:
`Fe +O_2 → Fe_3 O_4`
Balance the following equation:
`N_2+O_2 → NO`
Balance the following equation. Also name the products formed.
Ag +S → `Ag_2 S`
Balance the following equation. Also name the products formed.
`Mg + O_2 → MgO`
Balance the following equation:
\[\ce{CaO + HCl->CaCl2 + H2O}\]
Balance the following important equation:
Pb(NO3)2 + NaCl → NaNO3 + PbCl2
Balance the following important equation:
Al2O3.2H2O + NaOH → NaAlO2 + H2O
Balance the following important equation:
Na2CO3 + HCl → NaCl + H2O + CO2
Balance the following important equation:
K2Cr2O7 + HCl → KCl + CrCl3 + H2O + Cl2
Which of the following correctly represents a balanced chemical equation?
Why is it important to balance a skeletal chemical equation?
Which of the following is(are) an endothermic process(es)?
- Dilution of sulphuric acid
- Sublimation of dry ice
- Condensation of water vapours
- Evaporation of water
Which of the following gases can be used for storage of fresh sample of an oil for a long time?
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 ?
Complete the missing component /variable given as x and y in the following reactions
`"Cu"("s") + 2"AgNO"_3("aq") -> "Cu"("NO"_3)_2("aq") + x("s")`
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.
What information is not conveyed by a balanced chemical equation?
Complete and balance the following equation:
\[\ce{Cu + Conc{.} HNO3 ->}\]
