What is the difference between electrochemical series and reactivity series?

Basically, ECS (electrochemical series) is to refer for aqueous state. On the other hand, reactivity series is for the reaction without being in aqueous state. Reactivity series is about the reactivity of the chemical substances in a particular reaction. Like calcium is more reactive than magnesium.

How is the electrochemical series used in electrolysis?

The electrochemical series of half–cell reaction potentials, can be used to predict which ions are likely to be preferentially discharged to form electrolysis products on the cathode(+ pole in electrolysis) or anode (+ pole in electrolysis).

What is the electrochemical series?

Electrochemical or activity series When the electrodes (metals and non-metals) in contact with their ions are arranged on the basis of the values of their standard reduction potentials or standard oxidation potentials, the resulting series is called the electrochemical or electromotive or activity series of the …

What is discharge of ions in electrolysis?

In electrolysis, current is passed in the molten state of the ionic compound. The compound decomposes into ions. The anion loses electrons at anode and gets discharged and cation gets electrons at cathode and gets discharged.

What is electrochemical series and its significance?

The electrochemical series gives the increasing order of electrode potentials (reduction) of different electrodes on moving down the table. This means that the species, which accept the electrons (reduced) must be lower in the electrochemical series as compared to the other which is to lose electrons. ( oxidized).

Why CA is higher than Na in electrochemical series?

Explain why sodium is placed below calcium in electrochemical series, sodium being a more reactive element than calcium. Thus the most reactive metal is placed at the top of the series while the least reactive metal is placed at the bottom of the series.

What are the main uses of electrochemical series?

The main applications of the electrochemical series are:

• Oxidizing and Reducing Strengths.
• Displacement reactions.
• Predicting the Liberation of Hydrogen Gas from Acids by Metals.
• Predicting Feasibility of a Redox Reaction.
• Calculation of the EMF of the Cell.
• Comparison of Reactivities of Metals.

What is electrochemical series write its two uses?

Applications of electrochemical series : (i) Relative strength of oxidising agents in terms of E∘ values can be calculated. (ii) Relative strength of reducting agents in terms of E∘ values can be calculated. (iii) To identify the spontaneous direction of reaction.

What is electrochemical series and its characteristics?

Characteristics Electrochemical Series: In this series, all reduction potentials are given on hydrogen scale whose, Eo is taken as zero. The standard reduction potential of an element is a measure of the tendency of that element to get reduced. The element which has greater reduction potential gets reduced easily.

What is electrochemical series give its significance?

Which ion is discharged at the cathode first?

At cathode, H+ ions are preferentially discharged than Na+ ions as H+ ions are of much lower reactivity than Na+ ions.

What is discharging in chemistry?

discharge. [ dĭs-chärj′ ] Noun. The conversion of chemical energy to electric energy within a storage battery. A flow of electricity in a dielectric, especially in a rarefied gas.