what is the coordination number of cobalt in [co(nh3)5cl](no3)2? what is the coordination number of cobalt in [co(nh3)5cl](no3)2
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Answer:
The answer is 5.7 minutes
Explanation:
A first-order reaction follow the law of . Where <em>[A]</em> is the concentration of the reactant at any <em>t</em> time of the reaction,
is the concentration of the reactant at the beginning of the reaction and <em>k</em> is the rate constant.
Dropping the concentration of the reactant to 6.25% means the concentration of A at the end of the reaction has to be . And the rate constant (<em>k</em>) is 8.10×10−3 s−1
Replacing the equation of the law:
Clearing the equation:
<em>Considering the property of logarithms: </em>
Using the property:
Clearing <em>t </em>and solving:
The answer is in the unit of seconds, but every minute contains 60 seconds, converting the units:
<u>Answer:</u>
<em>1) ∆H is positive Endothermic
</em>
<em>2)
Endothermic </em>
<em>3) Energy is absorbed Endothermic
</em>
<em>4)
Exothermic
</em>
<em>5) ∆H is negtive Exothermic
</em>
<em></em>
<u>Explanation:</u>
∆H is called as enthalpy change
It is also called as Heat of reaction
Energy is required for the bond to break a bond.
Energy is released when a bond is formed.
that is
We see in this equation, bonds between hydrogen and chlorine molecules gets broken and on the right side bond is formed in HCl.
If energy of products greater than energy of reactants then the reaction enthalpy change is endothermic .
If energy of products lesser than energy of reactants then the reaction enthalpy change is exothermic .
For example
(positive hence endothermic)
(negative hence exothermic)