List(mention) all the gases collected over water
To list all the gases collected over water, one must consider the process known as "collecting a gas over water." This method involves using water displacement to collect gases that are less soluble in water. Here are some common gases that can be collected in this manner:
1. Hydrogen (H2): Place a piece of metal, such as zinc, in an acid solution to produce hydrogen gas. The gas is then collected by displacing water in an inverted container.
2. Oxygen (O2): Oxygen can be collected by decomposing water using an electric current in a process called electrolysis. The oxygen gas bubbles up and can be collected over water.
3. Carbon dioxide (CO2): Carbon dioxide can be generated through the reaction between an acid and a carbonate compound. The gas is collected by displacing water in an inverted container.
4. Ammonia (NH3): By reacting an ammonium salt with a strong base, ammonia gas can be produced. The gas is collected by displacing water in an inverted container.
5. Chlorine (Cl2): Chlorine gas can be obtained through the electrolysis of a chloride solution. It is collected over water by displacement.
6. Nitrogen (N2): Nitrogen gas can be collected over water by displacing air in an inverted container. This is done by using the fact that nitrogen is less dense than air.
It is important to note that when collecting gases over water, the water acts as a barrier to prevent the gases from escaping while allowing them to be collected. Additionally, it is crucial to handle these gases with caution as some of them can be hazardous.