The electrochemical series is a crucial tool in predicting the feasibility of redox reactions and understanding the relative reactivity of different elements. It allows for the determination of whether one metal can displace another from its salt solution based on their positions in the series, with metals higher in the series being able to displace those lower down. Additionally, the series aids in calculating the voltage or electromotive force (emf) of galvanic cells, as it indicates which electrode will act as the anode and which as the cathode during the electrochemical reactions
What is the electrochemical series used for?
The electrochemical series is used to predict the feasibility of redox chemical reactions and to determine the relative reactivity of different elements
How can the electrochemical series help in predicting chemical reactions?
It allows for the prediction of whether one metal can displace another from its salt solution based on their positions in the series
What does a higher position in the electrochemical series indicate about a metal?
A metal that is higher in the electrochemical series can displace a metal that is lower in the series from its salt solution
How does the electrochemical series assist in calculating the voltage of galvanic cells?
It indicates which electrode will act as the anode and which will act as the cathode, allowing for the calculation of the electromotive force (emf) of the cell
What happens if the sum of the standard electrode potentials (E°) is negative?
If the sum of E° values of the two half-cell reactions is negative, then the reaction will not be feasible
What does the electrochemical series help predict?
a) The color of a solution
b) The feasibility of redox reactions
c) The temperature of a reaction
d) The pressure of a gas
Answer: b) The feasibility of redox reactions
Which of the following can be determined using the electrochemical series?
a) The boiling point of a substance
b) The relative reactivity of metals
c) The density of a liquid
d) The pH of a solution
Answer: b) The relative reactivity of metals
In a galvanic cell, which electrode acts as the anode?
a) The one with the lower standard electrode potential
b) The one with the higher standard electrode potential
c) The one that is larger in size
d) The one that is connected to the positive terminal
Answer: a) The one with the lower standard electrode potential
What is the standard hydrogen electrode (SHE) used for?
a) To measure temperature
b) As a reference point for measuring electrode potentials
c) To determine the color of solutions
d) To calculate pressure
Answer: b) As a reference point for measuring electrode potentials
Which of the following metals can displace copper from its salt solution according to the electrochemical series?
a) Silver
b) Zinc
c) Gold
d) Platinum
Answer: b) Zinc