The answer is- The order of decreasing potential energy is :
The potential energy can be expressed as the static energy that is stored in the chemical bonds.
What is the trend of potential energy in an exothermic reaction and an endothermic reaction?
- During an exothermic reaction, heat is released and the stored potential energy of bonds is converted into the kinetic energy and thus there is a decrease in the potential energy during an exothermic reaction.
- During an endothermic reaction, heat is absorbed during the reaction and this heat is stored as potential energy in bond, hence the potential energy increases during a endothermic reaction.
- Now, during this reaction, basic Magnesium hydroxide, reacts with acidic , thus this reaction is an exothermic reaction.
- Hence, the potential energy of products is less than the potential of reactants.
- Next, the potential energy of solids are always more than the potential energy of gases.
- Therefore, the decreasing order of potential energy is
[H2O is not considered]
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The gaining of electron by an atom results in the formation of anion shown by the negative charge on the atom whereas lose of electron results in the formation of cation shown by positive charge on the atom. The atom lose or gain electron to complete their octet and get stable in nature.
The chlorine atom will gain an electron and form chloride anion with one negative charge on it. The chloride ion is more stable in nature compared to the chlorine atom due to complete octet of chloride ion by gaining of electron.
Electronic configuration of chlorine atom is:
By gaining of one electron, electronic configuration of chloride ion is:
Thus, the equation that shows the formation of the chloride ion from a neutral chlorine atom is:
Mass equals density times volume
Because D=m/v
Multiply by v
Dv=m