For the equilibrium `2H_(2) O -> H_(3) O ^(+) + OH^(-),` the value of `Delta G ^(0)` at 298 K is approximately `x xx 10 kJ mol^(-1).` Numerical value of x is `"_______".`
A
`100 kJ mol^(-1)`
B
`-80 kJ mol^(-)`
C
`80 kJ mol^(-1)`
D
`-100 kJ mol^(-1)`
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