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Why is it necessary to wash the residue in the filter paper with distilled water?
Washing the residue in the filter paper with distilled water helps to remove any impurities or excess reactants that may be present, ensuring that the final product obtained is pure and accurate. It also helps to prevent any loss of the desired product during the transfer process.
What is observed when heating Fe and S?
When heating iron (Fe) and sulfur (S) together, a chemical reaction occurs to form iron sulfide (FeS). This reaction is exothermic and produces a black solid product. The iron sulfide formed can be observed as a black solid residue after the reaction is completed.
What do you call a solid product formed after evaporation?
The solid product formed after evaporation is called a residue.
When crystals of feso4 are strongly heated the residue obtained is?
The residue obtained from heating crystals of FeSO4 (iron(II) sulfate) is Fe2O3 (iron(III) oxide) and SO2 (sulfur dioxide) gases. This is because the heating process causes the iron(II) sulfate to decompose, releasing water vapor, sulfur dioxide gas, and leaving iron(III) oxide as a solid residue.
Is a methanol is burned and leaves a residue a chemical change?
Burning (an oxidation reaction) is a chemical change,
When crystals of ferrous sulphate are strongly heated residue obtained is in which colour we get?
The residue obtained when crystals of ferrous sulphate are strongly heated is reddish-brown in color. This residue is a compound called ferric oxide or iron(III) oxide.
What is the residue obtained when sugar solution is filtered?
Sugar and water
Why is it necessary to wash the residue in the filter paper with distilled water?
Washing the residue in the filter paper with distilled water helps to remove any impurities or excess reactants that may be present, ensuring that the final product obtained is pure and accurate. It also helps to prevent any loss of the desired product during the transfer process.
What is observed when heating Fe and S?
When heating iron (Fe) and sulfur (S) together, a chemical reaction occurs to form iron sulfide (FeS). This reaction is exothermic and produces a black solid product. The iron sulfide formed can be observed as a black solid residue after the reaction is completed.
What will happen when lead nitrate is heated strongly?
A thermal decomposition reaction occur: lead oxide, nitrogen dioxide and oxygen are obtained.
What do you call a solid product formed after evaporation?
The solid product formed after evaporation is called a residue.
When crystals of feso4 are strongly heated the residue obtained is?
The residue obtained from heating crystals of FeSO4 (iron(II) sulfate) is Fe2O3 (iron(III) oxide) and SO2 (sulfur dioxide) gases. This is because the heating process causes the iron(II) sulfate to decompose, releasing water vapor, sulfur dioxide gas, and leaving iron(III) oxide as a solid residue.
When methanol is burned and leaves a residue a physical or chemical change?
When methanol burns and leaves a residue, it undergoes a chemical change. The burning of methanol involves a combustion reaction, where the methanol is reacting with oxygen to form new substances, such as carbon dioxide and water. The residue left behind is a result of this chemical reaction.
Is a methanol is burned and leaves a residue a chemical change?
Burning (an oxidation reaction) is a chemical change,
Did the evidence obtained in the silver nitrate tests of the 3 solutions prove conclusively that the residue actually was potassium chloride?
The evidence obtained from the silver nitrate tests strongly suggests that the residue is likely potassium chloride. The formation of a white precipitate in the silver nitrate tests is characteristic of chloride ions reacting with silver ions. However, further confirmatory tests may be needed to conclusively prove the identity of the residue as potassium chloride.
What does residure mean in science?
"Residue" in science refers to an impurity or substance left behind after a process such as filtration or chemical reaction. It may consist of unreacted starting materials, byproducts, or contaminants that were not removed during the process. Residues can impact the purity and effectiveness of a final product.
What do you call the solid product from evaporation?
Residue. Example: if you mix salt and water in a container, and then boil the water until is entirely evaporated, salt residue will remain on the walls of the container.
