Consider the conversion of a substance from solid to liquid. at one atmosphere pressure and at the normal melting point of the substance, which one of the following terms below equals zero for the system?

∆e
∆h
∆s
∆g

Are there any options that could alot..

Anyone know the answer?

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

The answer is the third option extremely gradual