After recrystallization, the final weight of biphenyl is found to be 0.02 g. Assume that all steps were carried out correctly, n
1 answer:
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Answer:
See explanation
Explanation:
Our answer options for this question are:
a. 2-chlorobutanoic acid:_______ 2-chlorobutanoic acid:_______ 3-chlorobutanoic acid:______.
b. 2,4-dinitrobenzoic acid:______ p-nitrobenzoic acid:______ p-bromobenzoic acid:_______.
c. p-cyanobenzoic acid:________ benzoic acid:_______ p-aminobenzoic acid:______
We have to check each set of molecules
<u>a. 2-chlorobutanoic acid,</u> <u>3-chlorobutanoic acid</u>
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In this case, the difference between these molecules is the position of "Cl". If the chlorine atom is closer to the acid group, we will have a higher inductive effect. So, the bond O-H would be weaker and we will have more acidity. So, the molecule with more acidity is <u>2-chlorobutanoic acid</u> and the less acidic would be <u>3-chlorobutanoic acid.</u>
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<u>b. 2,4-dinitrobenzoic acid,</u> <u>p-nitrobenzoic acid,</u> <u>p-bromobenzoic acid</u>
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In this case, we have several structural differences. In all the structure, we have deactivating groups ( and
). If we have a deactivating group the acidity will increase. In the case of "Br", we have a weak deactivating, so, this will be the less acidic one (<u>p-bromobenzoic acid)</u>
in <u>2,4-dinitrobenzoic acid</u> we have two deactivating groups, therefore, this would be the most acid compound.
<u>c. p-cyanobenzoic acid</u>, <u>benzoic acid</u>, <u>p-aminobenzoic acid</u>
On these molecules, we have several structural differences. In <u>p-cyanobenzoic acid</u> we have a deactivating group, therefore in this molecule we will have more acidity. In the <u>p-aminobenzoic acid,</u> we have an activating group, so, this would be the less acidic compound.
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See figure 1
I hope it helps!
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Answer:
The dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :
Explanation:
The rate of the reaction ;
As given in the question , that graph of time verses was linear but plots of
or
was curved.
Generally:
Graph of time verses for zero order reaction is linear with negative slope.
Graph of time verses for secon order reaction is linear with negative slope.
Graph of time verses for secon order reaction is linear with positive slope.
So, the dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :
Answer:
Volume at STP = 0.1401 L
Explanation:
We are given:
Vapor pressure of water = 20 torr
Total vapor pressure = 753 torr
Vapor pressure of gas = Total vapor pressure - Vapor pressure of water = 753 torr - 20 torr = 733 torr
Using
where,
P = pressure of the gas = 733 torr
V = Volume of the gas = 157 mL= 0.157 L
T = Temperature of the gas =
R = Gas constant =
n = number of moles of gas = ?
Putting values in above equation, we get:
At STP, one mole of the gas occupies a volume of 22.4 L
So, 0.006255 mole of the gas occupies a volume of 22.4*0.006255 L
<u>Volume at STP = 0.1401 L</u>