two types of electrochemical cells which are based on thermodynamic principals Q
ID: 889109 • Letter: T
Question
two types of electrochemical cells which are based on thermodynamic principals QUESTION 5 0.41667 points Save Answer cells which are based on thermodynamic principles can following statements about these cells is correct? Two types of electrochemical be described. Which of the O The anode will definitely gain weight in a voltaic cell. O Oxidation occurs at the cathode of both cells. O The free energy change, AG, is negative for the voltaic cell. O The electrons in the external wire flow from cathode to anode in an electrolytic cell.Explanation / Answer
answer is
third statement is correct------true
because
the first statement is wrong
because at anode oxidation takes place as a result losses weight
the second statement is wrong
because in voltaic cell oxidation takes place at anode while in elctrolytic cell also oxidation takes place at anode
the third statement is corretct
because to occur a cell reaction spontaneousliy when E^0 CELL IS +Ve
therefore
Delta G = -nFE^0 CELL
= -Ve value for E^0 CELL IS +Ve
fourth statement is wrong
because the electrons flow from anode to cathode in the external circuit in electrolytic cell.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.