electrochemistry

i was wondering when figuring out the value of E° cell which equation do i use? 1. cathode - anode or 2. cathode + anode the OAT Kaplan book is gave the second equation but the Kaplan MCAT book is giving me the first equation

A student can most effectively increase the current passing through the circuit in Figure 2 by doing which of the following? I got the answer correct because I understand if you decrease R you would increase I However, on one of the answer choices How does decreasing the conc. of X^n+ &...

I'm confused about two statements made in the Kaplan books: "Anions always move towards the anode, and cations always move toward the cathode." "Electrons always flow through the wire from the anode to the cathode and current (protons) flows from cathode to anode." But isn't an electron an...

On the 2017 OAT topics list, I don't see magnetism under Physics. Is it safe to say that I won't be seeing this topic on the test?

According to the following standard reduction potentials So I always get confused as to why they switched the sign for the standard reduction potential for Zn from -0.76 to +0.76. The way I look at it, from the reaction given, Zn is oxidized and Ag is reduced. As for the standard reduction...

In a spontaneous (Galvanic, concentration) cell, the sign of the anode is (+), as anions are attracted to it in order to balance out the newly oxidized charges. Opposite occurs in the cathode. In a non-spontaneous (Electrochemical) cell, the sign of the anode is (-)... however, since oxidation...