- The relationship is $\Delta G = -nFE$. - A positive EMF ($E > 0$) indicates a spontaneous reaction. - A spontaneous reaction is associated with a negative change in free energy ($\Delta G
The EMF of a chemical cell is positive, when the free energy change of the reaction is _______ .
Asked in MPSC CS Prelims 2020 · Topic: Physical and Chemical Changes, Solution (Energy Changes in Chemical Reactions (Exothermic and Endothermic Processes))
More Chemistry questions
- Which one of the following energy is stored in the links between the atoms ?
- Reaction of quick lime (CaO) with water to produce slaked lime (Ca(OH)₂) is an example of
- Which one of the following is an example of endothermic reaction?
- Which one among the following is an example of endothermic process ?
- A reaction is spontaneous when
- Mg (s) + O₂ (g) → MgO (s) + energy, this reaction may be classified as a/an
- Combination Reaction Two or more reactants (Mg and O₂) combine to form a single product (MgO). This fits the definition of a combination reaction. 2. Oxidation Reaction Magnesium (Mg) reacts with Oxygen (O₂). In this reaction, Mg loses electrons (its oxidation state changes from 0 to +2) and is oxidized. The reaction with oxygen is a classic example involving oxidation. 3. Exothermic Reaction The term "+ energy" on the product side indicates that energy is released during the reaction. Reactions that release energy are classified as exothermic reactions.Since the reaction fits the description of a Combination reaction, an Oxidation reaction, and an Exothermic reaction, all the individual classifications listed are correct. 189. Which of the following are exothermic processes ? Choose the correct option : - Reaction of water with quick lime - Dilution of sulphuric acid - Evaporation of water - Sublimation of camphor (crystals) - Question not attempted
- The decomposition of vegetable matter into compost is an example of -