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Electric

F.Sc Chemistry

What is called that cell in which electrical energy is converted into chemical energy?

The cell or battery in which the electrical energy is converted to chemical energy is called electrolytic cell.  Read More →

April 2, 2011 | einfoadmin | No Comments | 342 views

In the process of electrolysis chemical reaction takes place by the expense of which type of energy?

When electrical current is passed through the electrolytic solutions, then chemical reaction takes place. Actually electrical energy is converted into chemical energy.  Read More →

| einfoadmin | No Comments | 175 views

What is the best application of Hess’s law to calculate the lattice energy of ionic compounds?

Hess’s law of heat summation is widely applicable for the calculations of enthalpy changes. Born-Haber cycle is one of the applications of Hess’s law to calculate the lattice energy of ionic crystals.  Read More →

| einfoadmin | No Comments | 565 views

Where did the reduction takes place in electrolysis?

During the electrolysis, oxidation takes place at anode and reduction at the cathode.  Read More →

| einfoadmin | No Comments | 257 views

What is called the process in which one metal is deposited on the surface of other by the process of the electric current?

The deposition of a metal on the surface of another metal by the process of electrolysis is called electroplating. This is used to protect the metals.  Read More →

| einfoadmin | No Comments | 77 views

Where did the reduction always takes place?

Electron enter the cathode and gain of electrons is called reduction.  Read More →

| einfoadmin | No Comments | 87 views

Which tells us the influence of temperature on reaction rate?

Arrhenius has given mathematical equation which relates the temperature and energy of activation with the rate constant of the reaction. This equation tells us how much increases of temperature, increases the rate constant to how much extent.  Read More →

| einfoadmin | No Comments | 100 views

What is about the voltage if the salt bridge is not used between two half cells?

In the absence of salt bridge voltage drops to zero. This means the ionic current stops, hence electronic current also stops.  Read More →

| einfoadmin | No Comments | 403 views

What is said to an atom when it reacts chemically and gains one or more electrons?

Gain of electron is called reduction. When an atom reacts chemically and gains one or more electrons, then it is reduced.  Read More →

| einfoadmin | No Comments | 23 views

What type of chemical reactions proceed only in one direction?

Irreversible reactions proceed only in one direction.  Read More →

| einfoadmin | No Comments | 273 views
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