One of the most common alterations to which gasoline is submitted is the addition of ethanol to the fuel mixture in a proportion greater than that authorized by law. A simple technique to detect such adulteration consists of placing a volume of the gasoline sample to be analyzed and the same volume of water with salt in a beaker, stirring, leaving it to rest and observing, after some time, the formation of: a) a homogeneous mixture in which there are two components. b) a heterogeneous system in which there are two phases, one of which contains water, salt and ethanol. c) a solution with three phases, gasoline being the upper phase d) a three-phase heterogeneous material: the first phase consisting of salt water; the second for gasoline; and the third consisting of ethanol.
This is very very good cause you'll gonna have 100pts. just for this
and of course i brainlest you!
Share
Answer:
Explanation: ALTERATIONS
When detecting adulteration in gasoline, it is possible to obtain a heterogeneous system in which there are two phases, one of which contains water, salt and ethanol.
Therefore, it is possible to affirm that option b) is correct.
Detecting adulterations in gasoline
The method described is very simple, and consists of decantation: with the test tube at rest, the immiscible ingredients of the system separate.
Gasoline will form a single phase because it is the only non-polar substance in the system. Meanwhile, water and ethanol will form another phase, as both are polar liquids and like dissolves like. Along with water and ethanol in the second phase, there will also be salt, as it is a substance that undergoes dissolution in polar solvents.
Verified answer
unta maka tabang na nnyo