Answer:
Δ = -461198.3 J
Explanation:
Gibbs free energy is defined as the energy associated with a given chemical reaction which can be used to do work. Firstly, we need to figure out the chemical equation for the given problem. For the given problem, the chemical equation is:
⇒
⇒
The addition of the two gives the
of the equation, i.e. -1.18-1.21 = -2.39 V.
Then, using the equation for Δ, we have:
Δ = n*F*
= 2*96485*-2.39 = -461198.3 J
Answer:
This solution acts as an efficient buffer
Explanation:
the pH of a buffer solution can be described like this:
[acid]=[acetic acid]=
[base]=[sodium acetate]=
replacing,
If we add an acid, pH will decrease a little bit and if we add a base, pH wil increase a little bit.
lets supose that we change the rate by increasing [base] to 0.1, then
and now lets supose that we increase [acid] to 0.1
Big changes in concentration of base or acid doesn´t produce big changes in pH, in that way the mix of sodium acetate with acetic acid is a good buffer solution.