Fe 2 + 2e -> Fe Cr2O7 + 14H+ + 6e --> 2Cr+3 + 7H2O
E = 0.45 V
E = 1.23 V
Using the two cell reduction potentials shown for their corresponding reaction calculate the cell potential for a voltaic cell made from these two systems.
A.0.78 V
B. -168 V
C.168 V
D.0.78 V

b is the correct

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.