Mini Chemistry Physical Properties of Ammonia Colourless gas with pungent choking smell Alkaline gas (turns damp red limus paper blue) Less dense than air Very soluble in water Tests For Ammonia You can test for the presence of ammonia with the two tests below: Test 1 Hold a damp red limus paper into unknown gas. If the …
Haber Process Ammonia ($\text{NH}_{3}$) is manufactured from nitrogen and hydrogen by the Haber process (which is a reversible reaction). Starting Ingredients – Nitrogen & Hydrogen Nitrogen is obtained from the fractional distillation of liquid air. Hydrogen is obtained from steam reforming of natural gas: $\text{CH}_{4}(\text{g}) + 2\text{H}_{2}\text{O}(\text{g}) \rightarrow \text{CO}_{2}(\text{g})+4\text{H}_{2}(\text{g})$ cracking of petroleum fractions: $\text{C}_{2}\text{H}_{6}(\text{g}) \rightarrow …
A reversible reaction ($\rightleftharpoons$) is a reaction that can take place in both directions – i.e. forward reaction and backward reaction. When the rate of forward reaction is equal to the rate of backward reaction, the reaction is said to have reached a state of dynamic equilibrium. When a chemical reaction reaches a state of …
Preparation of Soluble Salts The methods of preparing soluble salts are categorised into: Solution + Solid Solution + Solution Solution + Solid In the “solution + solid” method, a solid and solution are reacted together to form soluble salt. You may follow the following procedures to prepare soluble salts: Add solid, a little at a …
A salt is an ionic compound formed when the hydrogen atom in an acid is replaced by a metal ion or ammonium ion. Note: Please do not restrict your thinking/interpretation of “salt” to the normal “table salt” in your kitchen. Neutralization is one common reaction whereby a salt is produced. An acid reacts with a …