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How does the boiling point of a hydrocarbon change in presence of hydrogen?
Wiki User
∙ 13y ago
It can NOT be changed by the presence of hydrogen without chemical reaction.
Wiki User
∙ 13y ago
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When Hydrogen sulfide is boiling is it a chemical or physical change?
It is a physical change. This is so because no new substance is formed. Hydrogen Sulfide is Hydrogen Sulfide wether it is boiling, at room temperature, or freezing.
Can water be separated into hydrogen and oxygen by boil physical change or chemical change?
Water cannot be separated into hydrogen and oxygen by boiling. Boiling is a physical change which means the molecule doesn't change at all--liquid water and water vapor are both H2O. Water can be separated into hydrogen and oxygen using electricity, this would be a chemical change.
Is water being split to form two new substances hydrogen and oxygen a change of state?
No. It is a chemical change. Simply boiling water would be a change of state.
Is hydrogen burning a physical or chemical change?
burning in presence or absence of oxygen is a chemical change.
What is hydrocarbon emmission?
Hydrocarbon emissions refer to the release of compounds consisting of hydrogen and carbon into the atmosphere. They are primarily produced by the burning of fossil fuels, such as gasoline, diesel, and natural gas, in vehicles, power plants, and industrial processes. Hydrocarbon emissions contribute to air pollution and can have negative impacts on human health and the environment, including the formation of smog and the contribution to climate change.
Is boiling does that changes as a physical or chemical?
Boiling is a physical change.
What kind of changes are melting and freezing?
Melting, freezing, boiling, evaporation are physical change
Is evolution of gas upon boiling water with magnesium strips a chemical change?
A chemical change is a change in which molecular composition of taken reactants changes.If water decomposes to hydrogen and oxygen then it is a chemical change while freezing or boiling of water is a physical change as it's composition remains same.Now if we take the case of boiling water with magnesium strips a colorless and odorless gas is evolved which can be collected using suitable arrangements. The colorless gas can be only water vapor or hydrogen( from decomposition of water ) or it can be a mixture of both of them. If we remove the water vapor using desiccating agent from the collected gas and them test the gas for combustion we will find that it is a supporter of combustion. This shows that gas is not water vapor but hydrogen. But hydrogen was not taken initially, hence we conclude that hydrogen was produced due to decomposition of water. Since the composition has changed so it is concluded that a chemical change has occurred.Here is the chemical equation :Mg + 2H2O --> Mg(OH)2 + H2
When boiling take place is the phase change a chemical or physical change?
Boiling is a physical change.
What is the basis of the molisch test being used to differentiate aldehydes and ketones from carbohydrates?
The Molisch test uses a color change system to show the presence of aldehydes when interacting with a phenol. A carbohydrate that has been dehydrated will form an aldehyde and thus react with the phenol to form a purple color change. A ketone will not react this way because they do not have a single hydrogen attached to the C=O bond, it has a full hydrocarbon group, making it less likely to oxidize.
Can boiling temperature of an element change?
The boiling temperature of an element can change by changing the pressure.
Is combustion a chemcial change?
Combustion clearly is a chemical change. In the combustion of a hydrocarbon, for example, you begin with the hydrocarbon and after combustion you end up with carbon dioxide (CO2) and water (H2O). This demonstrates that a chemical change has taken place.
