What is the difference between the isotopes CL 35 and CL 37?
Chlorine-35 and chlorine-37 are both isotopes of the element chlorine. An atom of chlorine-35 contains 18 neutrons (17 protons + 18 neutrons = 35 particles in the nucleus) while an atom of chlorine-37 contains 20 neutrons (17 protons + 20 neutrons = 37 particles in the nucleus).
Do noble gases have 8 valence electrons or 0?
Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.
What are noble gases and write a note on their Valency?
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.
What is the most unreactive gas?
Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
Why is nitrogen and hydrogen mixed in a ratio of 1 3?
Avogadro’s Law says that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. That means that the gases are going into the reactor in the ratio of 1 molecule of nitrogen to 3 of hydrogen. This wastes reactor space – particularly space on the surface of the catalyst.
Which type of reaction is the Haber process?
The Haber process involves a reversible reaction at dynamic equilibrium . The principles covered in Reversible reactions can be applied to explain how the rate and yield will be affected by the choice of reaction conditions.
What are the three raw materials in the Haber process?
The raw materials for the Haber process are Natural gas, air and water. In the first stage, Natural gas (which is mostly methane) is reacted with steam to produce carbon dioxide and hydrogen. To speed up the reaction, a catalyst is used.
Why is the Haber process so important?
The process allows the economical fixation of atmospheric dinitrogen in the form of ammonia, which in turn allows for the industrial synthesis of various explosives and nitrogen fertilizers, and is probably the most important industrial process developed during the twentieth century.
Why do we use 200 ATM in Haber process?
Thus a compromise temperature of 450 oC is used which is high enough for rate to be quite fast and low enough to get a relatively high yield of ammonia. A pressure of 200 atm is used for this reaction. This implies that if pressure is increased, the forward reaction would be favoured, producing more ammonia.
How is the Haber process used today?
Although the Haber process is mainly used to produce fertilizer today, during World War I it provided Germany with a source of ammonia for the production of explosives, compensating for the Allied Powers’ trade blockade on Chilean saltpeter.
Why is a high temp used in Haber process?
The optimum conditions for the productions of ammonia are a pressure of 200 atm and a temperature of about 700 K. The process obviously is exothermic and 700 K is, by no means, a low temperature.