The TLC analysis is aimed to verify the completion and the product of the reaction. potassium permanganate is then added to the TLC plate to detect the existence of double bond in the final product. Potassium permanganate reacts with the double bond and makes the spot yellow-brown.
Electrophilic addition is an exothermic reaction, in which a pi bond is turned into a sigma bond. The double bond in the alkene acts as a nucleophile. Halogens, halogen acids , hypohalous acids, sulphonic acid and water can be used as the electrophilic reagent. In this experiment, bromination of cholesterol is performed. The electrophilic attack of Br2generates acyclic bromonium ion. The addition gives a trans stereochemistry to the bromonium ion. As the Br-attacks the most substituted carbon in anti-periplanar fashion by SN2reaction, it would result in the inversion of configuration at that specific carbon.
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Answer:
21.3dm³
Explanation:
Given parameters:
Initial volume of gas = 3dm³
Initial pressure = 101kPa
Final pressure = 14.2kPa
Unknown
Final volume = ?
Solution:
To solve this problem, we use the Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".
Mathematically;
P₁ V₁ = P₂ V₂
P and V are pressure and Volume
1 and 2 are the initial and final states
Now insert the parameters and solve;
101 x 3 = 14.2 x V₂
V₂ = 21.3dm³
<span>Earthquakes, tsunamis, the rise of hills and mountains, change the course of rivers
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Answer:
Cutting, tearing, shattering, grinding, and mixing are further types of physical changes because they change the form but not the composition of a material. For example, mixing salt and pepper creates a new substance without changing the chemical makeup of either component.
Explanation:
