Which of the following reactions would be the most spontaneous at 298 k? which of the following reactions would be the most spontaneous at 298 ? a + b → 2c; e∘cell = -0.40 v a + b → c; e∘cell = +1.22 v a + 2b → c; e∘cell = +0.98 v a + b → 3c; e∘cell = +0.15 v more information is needed to determine.

The most spontaneous is (B)

Explanation:

We follow the equation for Gibbs free energy:

Where n is the number of electrons involved, F is the Faraday's constant (96485 C/mol). As we do not know the number of electrons per reaction, we will assume the same number for every reaction for the sake of the comparison:

With the results we can see that the reaction that would be most spontaneous is reaction b, as the Gibbs free energy is the most negative one. Also we see that reaction a occurs in the opposite direction.

you didnt put any of the following

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.