A temperature change in a reaction indicates a. physical change b. no change c. a chemical change d. a positive change
2 answers:
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Answer:
Hello dear,
● Benzene to benzaldehyde -
There are several ways to convert benzene into benzaldehyde.
1) Riemer-Tiemann reaction -
- In this reaction, benzene is converted to benzaldehyde with the help of CHCl3 & NaOH.
C6H6 ---> C6H5-CHO
Catalyst - CHCl3 & NaOH
2) Gatterman-Koch reaction -
- In this reaction, benzene is converted to benzaldehyde with the help of CO/HCl & AlCl3/CuCl.
C6H6 ---> C6H5-CHO
Catalyst - CO/HCl & AlCl3/CuCl
[Refer to image attachment for better understanding.]
Hope this helps...
Explanation:
Answer : The molarity of the new solution is, 4.069 M
Solution : Given,
Molarity of KOH solution = 4 M
Volume of KOH solution = 2.5 L
Volume of water added = 1.8 L
First we have to calculate the volume of new solution.
Volume of new solution = volume of KOH solution + volume of water added
Volume of new solution = 2.5 L + 1.8 L = 4.3 L
Now we have to calculate the molarity of the new solution.
Formula used :
where,
= molarity of KOH solution
= molarity of new solution
= volume of KOH solution
= volume of new solution
Now put all the given values in the above formula, we get the molarity of the new solution.
Therefore, the molarity of the new solution is, 4.069 M