endothermic reaction examples
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Answer:
What is an Endothermic Reaction?
Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products. These reactions lower the temperature of their surrounding area, thereby creating a cooling effect. Physical processes can be endothermic as well – Ice cubes absorb heat energy from their surroundings and melt to form liquid water (no chemical bonds are broken or formed).
When a chemical bond is broken, it is usually accompanied by a release of energy. Similarly, the formation of chemical bonds requires an input of energy. The energy supplied/released can be of various forms (such as heat, light, and electricity). Endothermic reactions generally involve the formation of chemical bonds through the absorption of heat from the surroundings. On the other hand, exothermic reactions involve the release of heat energy generated from bond-breakage.
How are Endothermic and Exothermic Reactions Different?
The terms ‘Endo’ and ‘Exo’ have Greek roots, meaning ‘within’ and ‘out’ respectively. As the names suggest, the primary difference between endothermic and exothermic reactions is that the former absorbs heat from the surroundings whereas the latter involves a release of heat.
Some other differences between these types of chemical reactions are tabulated below.
Endothermic Reaction Exothermic Reaction
The system absorbs heat from the surroundings The system releases heat into the surroundings
The entropy of the surrounding decreases (ΔS <0) The entropy of the surrounding increases (ΔS>0)
Enthalpy change (ΔH) is positive ΔH is negative
Explanation:
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Answer:
Give a test that can be used to confirm the presence of carbon in a compound.
With a valency of 4, how is carbon able to attain noble gas configuration in its
compounds?
Explanation:
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