oxides of the active metals combine with water to form

Set the apparatus as shown in figure 6.8. The platinum coil is heated at 800 o C in a combustion tube till it becomes white hot. Then ammonia and oxygen are passed through the tube. Under these conditions and in the presence of the catalyst, ammonia combines with free oxyge..

Some active metals react spontaneously with water to form their respective base..

Set the apparatus as shown in figure 6.7. Firstly, when ammonia is passed through the longer tube and is made to ignite, it does not catch fire. Then oxygen is sent through the shorter tube. Now when ammonia is ignited, it catches fire and the following reaction takes place: Although the pro..

Potassium, sodium, lithium and calcium react with cold water. Sodium reacts vigorously with cold water forming sodium hydroxide and hydrogen. Metals from magnesium to iron in the activity series of metals, react with steam (but no..

The elements of group 15 combine with oxygen either directly or indirectly to form oxides. The important oxides of group 15 elements along with their oxidation states are listed in table. Thus, it is nitrogen, which forms all oxides..

An example of a transfer of two electrons (Fig. 3.3) ..

The reaction is immediate and one can observe bubbles of oxygen gas liberated in the flask. As more and more hydrogen peroxide is added more oxygen is formed. The oxygen produced is collected in an inverted glass cylinder by the downward displacement of water in a trough. Mangan..

Water can act both as an oxidizing as well as a reducing agent. With active (more electropositive) elements, water acts as an oxidizing agent and in turn gets reduced to give H 2 gas. The reduction potential for the reduction o..

Extracting Metals Low in the Activity Series - Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, ..

Let us look at the way acids react with metals. a) All metals above hydrogen in the metal reactivity series generally react with dilute acids to form their respective salt and liberate hydrogen. Metal + Acid Salt + Hydrogen b) Very ..