Calculate the standard free-energy change for the reaction at 25 ∘ c. 25 ∘c. refer to the list of standard reduction potentials. 2 au 3 + (aq) + 3 ni (s) − ⇀ ↽ − 2 au (s) + 3 ni 2 + (aq) 2au3+(aq)+3ni(s)↽−−⇀2au(s)+3ni2+(aq ) δ g ∘ = δg∘=

The for the given reaction is

Explanation:

For the given chemical reaction:

Here, gold is getting reduced because it is gaining electrons and nickel is getting oxidized because it is loosing electrons.

Oxidation half reaction:     ( × 3)

Reduction half reaction:     ( × 2)

We know that:

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

To calculate the of the reaction, we use the equation:

Relationship between standard Gibbs free energy and standard electrode potential follows:

where,

n = number of electrons transferred = 6

F = Faraday's constant = 96500 C

= standard cell potential = 1.73 V

Putting values in above equation, we get:

Hence, the for the given reaction is

what's the

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.