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प्रश्न
Which among the following change is exothermic or endothermic in nature?
Dissolution of ammonium chloride in water
उत्तर
Endothermic
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संबंधित प्रश्न
What are the limitations of a chemical equation ?
Balance the following equation:
H2 + O2 → H2O
Write balanced chemical equations for the following word equation:
Magnesium + dil sulphuric acid → Magnesium sulphate + water
Balance the following equation. Also name the products formed.
`Na + H_2 O → Na OH + H_2`
Write a balanced molecular equation for the following word equation:
\[\ce{Lead sulphate + ammonium hydroxide->Ammonium sulphate + lead hydroxide}\]
Balance the following important equation:
Na2CO3 + HCl → NaCl + H2O + CO2
Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
- It is an endothermic reaction
- It is an exothermic reaction
- The pH of the resulting solution will be more than seven
- The pH of the resulting solution will be less than seven
Complete the missing component /variable given as x and y in the following reactions
`"Zn"("s") + "H"_2"SO"_4("aq") -> "ZnSO"_4(x) + "H"_2("y")`
Which among the following change is exothermic or endothermic in nature?
Decomposition of ferrous sulphate
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.
