Write an equation that shows the formation of a chromium(ii) ion from a neutral chromium atom.
2 answers:
Answer : The balanced equation will be,
Explanation :
Oxidation : It is the process of losing of one or more electrons.
Reduction : It is the process of gaining of one or more electrons.
The balanced equation will be,
A neutral chromium atom is oxidized into chromium(II) ions by the loss of two electrons.
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Answer:
The significance of "Er" in the diagram is :
B.) Threshold energy for reaction
Explanation:
Threshold energy : It is total amount of energy required by the reactant molecule to reach the transition state .
Activation energy : It is the excess energy absorbed by the molecules to reach the transition state.
<u>Activation Energy = Threshold Energy - Average Kinetic Energy</u>
<u>This means Activation energy decreases on increasing kinetic energy</u>
On increasing Temperature average kinetic energy of the molecule increases which reduces the activation energy and the reaction occur faster in that case.
Catalyst also reduces the Activation energy.
<u>Er = Threshshold energy for reaction at 30 degree</u>
<u>Ea = Activation Energy</u>
<u>The given figure shows that the threshold energy decreases on increasing the temperature</u>
<u>Only the molecule having energy greater than Er can react to form product</u>
