What is the value of δg°' (or, to put it another way, the cost) when 2nadp+ and 2h2o are converted to 2nadph plus 2h+ plus o2?

The chemical reaction is given as:

Here, oxygen is oxidised and is reduced. Thus, redox reaction occurs.

For cell reaction,          (2)

where, = standard state free energy

n= number of electrons

F= Faraday constant ()

= cell potential

Substitute the value of number of electrons i.e. 2, Faraday constant and cell potential in the formula to determine the value of  .

Now, calculate the value of cell potential

          (1)

= (standard reduction potential of )

= (standard reduction potential of )

Put the above values in formula (1), we get:

=

Now, substitute above value in formula (2)

=

Since, one coulomb volt is equal to one joule.

Thus, value of is equal to or

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.