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Would acetylene reacts with bromine?
Yes. Acetylene is unsaturated with a triple bond joining the carbon atoms. The reaction is HCCH + 2Br2 -> Br2HCCHBr2 The bromine adds accross the triple bond, leaving a single carbon carbon bond.
How can you tell if the reaction of calcium carbonate and hydrochloric acid is finished?
You can tell if the reaction is finished when there are no more bubbles of gas being produced. This indicates that all the calcium carbonate has reacted with the hydrochloric acid. You can also test by adding a few more drops of hydrochloric acid to see if any additional bubbles are produced.
How do you determine the molar mass of acetylene and it's molecular formula?
The density of acetylene gas is 1.17 grams/L at STP. 1.17g/1L * 22.4L/1mol = 26 mol because in pure gases 1 mol= 22.4 liters. the empirical formula is CH the molar mass of CH is 12+1=13 g/mol 26/13=2 C2H2
How the equivalent weight of calcium phosphate be calculated?
The equivalent weight of calcium phosphate is calculated by dividing the molar mass of calcium phosphate by the valency factor of the phosphate ion. Since calcium phosphate is a salt with the formula Ca₃(PO₄)₂, its molar mass is calculated by adding the molar masses of calcium and phosphorus (since there are three calcium ions and two phosphate ions in the formula). The valency factor of phosphate ion is 2 since it can donate or accept 2 electrons.
What does adding calcium chloride flakes do for your pool water?
Calcium chloride increases the hardness of water. Proper hardness is critical to balancing the water in a pool. Proper hardness is especially important in a plaster pool to prevent leaching of the plaster finish, which results in a rough surface. Calcium chloride can be purchased at home improvement stores at significant savings over pool supply outlets.
Was there a change in a carbide after adding water to it?
When water reacts with carbide, it produces acetylene gas and calcium hydroxide. The acetylene gas is highly flammable and can be used in welding torches, while the calcium hydroxide is a byproduct of the reaction and is often discarded as waste.
How can one create acetylene safely and effectively?
To create acetylene safely and effectively, one can use a calcium carbide generator. This involves adding water to calcium carbide to produce acetylene gas. It is important to follow proper safety precautions, such as wearing protective gear and ensuring proper ventilation, to prevent accidents.
How is acetylene gas prepared in the laboratory?
The usual laboratory method for making acetylene is by adding (dropwise) water to calcium carbide:CaC2 + 2 H2O → C2H2 + Ca(OH)2Calcium carbide is very cheap and available without restrictions in most countries.
What is the chemical compound found in slaked lime?
The chemical compound found in slaked lime is calcium hydroxide, which is produced by adding water to calcium oxide (quicklime). It is commonly used in construction, agriculture, and water treatment applications.
What product can be made by adding water to calcium oxide?
calcium hydroxide is formed.
How can limewater be made from calcium carbonate?
Limewater can be made by adding calcium carbonate (CaCO3) to water to produce calcium hydroxide (Ca(OH)2). The chemical reaction is CaCO3 + H2O -> Ca(OH)2 + CO2. The resulting solution is limewater, which is commonly used in various chemical tests.
When is it safe to swim after adding calcium to pool?
Any time you like calcium is harmless
Is adding of calcium to water a chemical change?
Adding calcium to water is a physical change because it does not alter the chemical composition of either the calcium or water molecules. The calcium simply dissolves in the water to form calcium ions and does not undergo a chemical reaction.
What is the role of adding calcium chloride to the saliva?
Adding calcium chloride to saliva can help initiate coagulation reactions in forensic analysis, aiding in DNA extraction from biological samples such as blood or saliva. The calcium ions released from calcium chloride can neutralize the charge on DNA molecules, promoting their precipitation and separation from other cellular components.
What are the products when adding cuprous chloride and acetylene?
In the presence of ammonia the copper acetylide, Cu2C2, is formed. Be careful, this compound is dangerous and explosive.
Is adding calcium to water a chemical property or chemical change?
Calcium reacting with water is a chemical change.
Is hydrated lime a gas?
No, hydrated lime is not a gas. It is a solid white powder composed of calcium hydroxide, which is produced by adding water to quicklime (calcium oxide). When hydrated lime is mixed with water, it forms a solution that is commonly used in various industrial and chemical processes.
