which of the following can decompose by electrolysis

Hydrogen can also be prepared from water by electrolysis, after acidifying it with sulphuric acid. The water decomposes to form hydrogen and oxygen. Hydrogen gas is liberated at the cathode and oxygen at the anode (Fig.9.6). The volume of hydrogen formed is double that to the o..

Chemical energy can be converted into electrical energy with the help of a galvanic cell. Conversely, the phenomenon of chemical changes taking place by the passage of electricity through an electrolyte is called electrolysis. Humphrey Davy (1807) showed this in his experiments, when he i..

Characteristics of Electrolysis - Following are the characteristics of the electrolysis process: 1) Electrolytic reactions involve the gain of electrons at the cathode and loss of electrons at anode. 2) The cathode reaction is a reduction reaction as the cations accept..

Dihydrogen of high purity is usually prepared by the electrolysis of water in the presence of a small amount of acid or base. During electrolysis, dihydrogen is collected at cathode and dioxygen is liberated at anode. The following reactions take place during the ..

Electrolysis of copper sulphate solution It is found that copper is removed from the anode and is deposited on the cathode. Due to ionization, the CuSO 4 solution is dissociated. ..

When sodium chloride is formed the sodium atom donates an electron to the chlorine atom to form an electrovalent bond. Hence in the process: Sodium atom loses an electron and becomes positively charged (Na + ). Chlorine atom gains an electron and becomes negatively charged (Cl - ). The ele..

Dry lithium chloride is fused with potassium chloride and electrolysed in an electrolytic cell. Potassium chloride is added to lower the temperature and increase the conductivity of lithium chloride. The cell is operated at a temperature of about 720 K and a voltage of 8 to 9 volts is applied. The..

When a solution of copper sulphate is electrolyzed using platinum electrodes, the products of electrolysis are copper at cathode and oxygen gas at anode. After electrolysis the solution around the anode is found to contain sulphuric acid. This can be explained as follows..

It is based on the electrolysis of aqueous solution of sodium chloride. The products of electrolysis are sodium hydroxide, chlorine gas and dihydrogen gas. The chemical reactions involved are as follows..

. Water can be decomposed to hydrogen and oxygen only by electrolysis. If we bring a magnet near a sample of iron sulphide, the iron present in the iron sulphide cannot be separated. We can summarize the properties of compounds as follows: A compound cannot be separate..