Advertisements
Advertisements
प्रश्न
Which among the following change is exothermic or endothermic in nature?
Decomposition of ferrous sulphate
Advertisements
उत्तर
Endothermic
APPEARS IN
संबंधित प्रश्न
What are the ways by which a chemical equation can be made more informative ?
Write balanced chemical equations for the following word equation:
Magnesium + dil sulphuric acid → Magnesium sulphate + water
Balance the following equation:
`Fe +O_2 → Fe_3 O_4`
Balance the following equation. Also name the products formed.
`KCIO_3 → KCI +O_2`
Name the type of chemical reaction shown by the following equation.
NaOH + HCI → NaCI + H2O
State the information provided by a chemical equation.
Write a balanced molecular equation for the following word equation:
\[\ce{Calcium + water->Calcium hydroxide + hydrogen}\]
Balance the following equation:
\[\ce{K + H2O->KOH + H2}\]
Balance the following equation:
\[\ce{Fe2O3 + H2->Fe + H2O}\]
Balance the following equation:
\[\ce{Pb3O4->PbO + O2}\]
Balance the following equation:
\[\ce{ZnS + O2->ZnO + SO2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{3NH3 + H2SO4->(NH4)2SO4}\]
Balance the following important equation:
Fe2O3 + Al → Al2O3 + Fe
Balance the following important equation:
NH3 + Cl2 → HCl + NCl3 [nitrogen trichloride]
Before burning in air, the magnesium ribbon is cleaned by rubbing with sand paper to:
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")`
Which among the following change is exothermic or endothermic in nature?
Dissolution of ammonium chloride in water
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.
Write a balanced chemical equation of the following reaction and also classify them.
Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
