Answer:
Fe3+ + 3e– --------> Fe
Explanation:
Reduction refers to a gain of electrons. A specie is said to be reduced when it gains electrons or when it experiences a decrease in oxidation number. The both sentences above can be clearly seen when inspecting a reduction half equation.
Consider the redox reaction half equation;
Fe3+ + 3e– ------>Fe
We can see that Fe^3+ accepted three electrons, the oxidation number of iron thereby decreased from +3 to zero from left to right. This implies that the Fe^3+ was actually reduced according to the equation shown.
Answer:
4Fe+ 6H2 O+ 3O2 ----> 4Fe(OH)3
Answer : The value of 
for the reaction is, 7.5
Explanation :
Initial concentration of 
= 
The balanced decomposition equilibrium reaction is,
Initial conc. 0.125 0
At eqm. (0.125-x) 2x
The expression of equilibrium constant for the reaction will be:
![K_c=\frac{[NO_2]^2}{[N_2O_4]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BNO_2%5D%5E2%7D%7B%5BN_2O_4%5D%7D)
Now put all the values in this expression, we get :
The concentration of 
at equilibrium = 0.0750 M
So, 0.125 - x = 0.0750
x = 0.05 M
Now put the value of 'x' in the above expression, we get:
Now we have to calculate the value of 
for the given reaction.
As we know that,
So,
Therefore, the value of for the reaction is, 7.5
Answer:the medication would not last as long
Explanation:
Because of the desolving of the tablet so quickly it would
C.
This is because the water has undergone a physical change meaning that the effects can be reversed. If nothing was added or lost from the water the ice would be the exact same weight.
