Answer:
A. Butyliodide will react faster than butylbromide, this is because iodide is a better leaving group in substitution reaction than bromide. B. 1-chloropentane is more reactive than 1-chloro2methylbutane, this is because Alkyl groups at the carbon atom decrease the reaction rate of SN2 reaction. C. Chloro- hexanechloride is more reactive than hexyl chloride because determining the rate of reaction in SN1 reaction of formation of carbocation is more stable than the primary one. SN1 reaction is a secondary carbocation reaction. D. Terri-butylbromide is more reactive than 1-bromo 2,2 dimethylpropane, this is because Tertiary carbocation is stable compared to the primary, this is because the rate of determining step involved in SN1 reaction. E. Sec-butyl bromide is more reactive than isobutylbromide, this is because Sec-butyl bromide belong to the secondary all halide why the other belongs to primary class. F. The reaction is faster in sodium methoxide in methanol than sodium acetate in acetic acid, this is because 1-chlorobutane is a primary alklyl- chloride than and the strength of nuclephile determines the rate of reaction. G. when sodium azide mixed with ethanol is used, the reaction will be faster, because strong acid form weak conjuage base and also azide is a better nuclephile.
Answer:
b. 101.02°C
Explanation:
The elevation of boiling point in a solvent due the addition of a solute is a colligative property called <em>Boiling point Elevation. </em>The formula is:
ΔT = Kb*m*i
<em>Where ΔT is change in boiling point</em>
<em>Kb is boilinig point elevation constant = 0.512°C/m for water</em>
<em>m is molality of the solution = 0.50m</em>
<em>And i is Van't Hoff Factor (4 for the Al(NO₃)₃ because its disolution produce 4 ions)</em>
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Replacing:
ΔT = 0.512°C/m*0.50m*4
ΔT = 1.02°C
As the boiling point of pure water is 100°C and the increasing is of 1.02°C, boiling point of the solution is:
101.02°C
Right option is:
<h3>b. 101.02°C</h3>
<em />
The most important state in determining the state of a substance is
temperature. This is because the kinetic energy of a substance's
molecules depend on its temperature. For example, an increase in
temperature speeds up the movement of molecules. A decrease in
temperature slows down the movement of molecules.
This is
important because by increasing or decreasing a substance's temperature,
you are also adding or removing energy from it. And when a substantial
amount of energy has been added or removed, a substance can change its
state from solid > liquid > gas or the other way around.
C. horizontal
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Answer:
this may help you solve the problem! :D
Explanation:
Negative air ions (NAIs) have been discovered for more than 100 years and are widely used for air cleaning. Here, we have carried out a comprehensive reviewing on the effects of NAIs on humans/animals, and microorganisms, and plant development. The presence of NAIs is credited for increasing psychological health, productivity, and overall well-being but without consistent or reliable evidence in therapeutic effects and with controversy in anti-microorganisms. Reports also showed that NAIs could help people in relieving symptoms of allergies to dust, mold spores, and other allergens. Particulate matter (PM) is a major air pollutant that affects human health. Experimental data showed that NAIs could be used to high-efficiently remove PM. Finally, we have reviewed the plant-based NAI release system under the pulsed electric field (PEF) stimulation.