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The bottom of a test tube was covered with soot after an experiment which required heating. What kind of flame was used during the experiment?
A yellow, smoky flame was likely used during the experiment, which produced soot as a byproduct of incomplete combustion. This type of flame is often seen with a fuel-rich mixture or inefficient burning of the fuel.
When the Bunsen burner is on but no experiment is being carried out why is it advisable to set it to the luminous flame?
So you don't burn yourself. If it's on and you're not paying attention to it, a luminous flame is easily glimpsed in your peripheral vision. If the flame was non-luminous, it's much harder to detect and causes a greater risk. the non-luminous flame also burns much hotter.
How can a student change a luminowhat would need to be done to a Bunsen in order to change a luminous yellow flame into a non luminous blue flameus yellow flame into a non luminous blue flame?
A blue flame contains lots of oxygen compared to the yellow flame. So the only thing you should do is decrease the oxygen supply
Which flame represents complete combustion?
Non-luminous flame
Which bunsen burner luminous or non luminous flame used in laboratory and why?
A non-luminous flame is typically used in laboratory settings when using a Bunsen burner. This flame produces a more controlled and homogeneous heat source, making it ideal for processes like heating, sterilizing, and combustion analysis. The non-luminous flame also produces less soot and is more energy efficient compared to a luminous flame.
Why a luminous flame is not used as a source of heat in a laboratory experiment?
A luminous flame produces soot, which can contaminate the experiment or react with chemicals being used. In addition, the temperature of a luminous flame is not as high or consistent as a non-luminous flame, making it less suitable for precise heating applications in a laboratory setting.
Which type of flame should use in laboratory luminous or non luminous?
Non- luminous flame should be used as it is steady and produces little or no soot.
Should a luminous or non luminous Bunsen flame be used for heating in the laboratory and why?
Non-luminous flame should be used for heating in the laboratory because the flame is steady and produce little or no soot.Non-luminous flame is very hot thus, it is recommendable to use for laboratory purposes.Luminous flame is unsteady while non-luminous flame is steady.Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
A non luminous flame should be put off or adjusted to a luminous flame. Explain?
fire
Should a luminous or non-luminous Bunsen flame be used for heating in the labortary why?
.
Characteristics of luminous flame?
Non luminous zone is the zone of a flame which is also the hottest zone of the flame as it is mostly in contact with oxygen. It is also called invisible zone.
Why is it important to set a Bunsen burner on luminous flame prior to the experiment?
Setting a Bunsen burner to a luminous flame before an experiment is important because it ensures that the flame is visible and safe to work with, minimizing the risk of accidents. The luminous flame, characterized by its yellow color, indicates incomplete combustion and allows for easier monitoring of the burner’s status. Additionally, it helps prevent the loss of heat through convection that can occur with a non-luminous flame, providing a more controlled environment for initial setup and adjustments.
Is non luminous flame steady or unsteady?
Non-luminous flame should be used for heating in the because the flame is steady and produce little or no soot. Non-luminous flame is very hot thus, it is recommen- dable to use for laboratory purposes. Luminous flame is unsteady while non-lumi- nous flame is steady. Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
What is the difference between luminous and non luminous?
-A non-luminous flame is when the air hole of the Bunsen burner is closed but a luminous flame is produced when the air hole is opened.-A luminous flame has an outer of orange colour and an inner of blue. A non-luminous flame has an outer of blue and an inner of orange.-A luminous flame produces soot while a non-luminous does not produce soot.-A luminous flame is weak and unsteady. A non-luminous flame is strong and steady.-A non-luminous flame is very hot while a luminous flame is not too hot.
What is the degree of hotness of luminous flame?
The degree of a luminous flame is 100 degree .
The bottom of a test tube was covered with soot after an experiment which required heating. What kind of flame was used during the experiment?
A yellow, smoky flame was likely used during the experiment, which produced soot as a byproduct of incomplete combustion. This type of flame is often seen with a fuel-rich mixture or inefficient burning of the fuel.
Suggest two reasons why a luminous flame is not used as a source of heat in a laboratory experiment?
It produces more heat. It does not produce soot that would stain the laboratory apparatus.
