Answer:
using higher concentration of the nucleophile
Explanation:
In SN2 reaction, the attack of the nucleophile on the substrate occurs simultaneously as the leaving group departs. The entering group normally attacks through the back side of the molecule. The reaction is concerted and bimolecular. This implies that the concentration of the nucleophile is important in the rate equation for the reaction. Hence increasing the concentration of the nucleophile will increase the rate of SN2 reaction.
Answer:
Distillation
Explanation:
Distillation is the process of separating the components of a liquid by using the method of selective boiling and condensation.
Since the components of the liquid have different boiling points, they would evaporate at different temperatures, thus causing the separation to occur.
So, distillation can be used to separate a mixture of milk and water.
A sample of oxygen gas had a volume of 2.50 L at STP.
Answer:
An electrical phenomenon is caused by flow of free electrons from one atom to another. The characteristics of current electricity are opposite to those of static electricity. Wires are made up of conductors such as copper or aluminum.
Explanation:
from google
1) If the hydrogen ion concentration of a solution is 10–10M, is the solution is definitely alkaline. The thing I used to determine that fact is basic point - <span>pH above 7 is always alkaine, and as a proof we can see from the task that </span><span>the concentration of hydroxyl OH- is pretty higher than hydrogen H+, which is a direct charachteristic of alkain solution.
Here is a tip for you, I bet it will be useful :
</span>>7 = basic
<span><7 = acidic </span>
7 = neutral
2) The most suitable answer for the second question is the negative logarithm of the hydrogen ion concentration. Pay attention to letters P and H, which pose as little promt as they point on Potential of Hydrogen. And the reason why it is negative is that scale of Ph is positive by default, but due to the fact that ion concentration is always less than 1, and as a result we get <span>the negative logarithm.
3) According to the small table shown in the first question, the answer is </span>[H+] = 1 x 10–11 M which is <span> pH 11, as I mentioned, since Ph is above 7 it is a basic solution.
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