Question is incomplete, complete question is as follows :
Complete Question : .Sulfonation of benzene has the following mechanism:
(1) 2 H2SO4 ⇌ H3O+ + HSO4− + SO3
[fast]
(2) SO3 + C6H6 → H(C6H5+)SO3−
[slow]
(3) H(C6H5+)SO3− + HSO4− → C6H5SO3− + H2SO4
[fast]
(4) C6H5SO3− + H3O+ → C6H5SO3H + H2O
[fast]
write the overall rate law for the initial rate of the reaction as a fraction.
Rate=k(________/_________)
Answer:
The overall rate law for the initial reaction is = ![k_{overall} [H_{2}SO_{4}]^{2} [C_{6}H_{6}]](https://tex.z-dn.net/?f=k_%7Boverall%7D%20%5BH_%7B2%7DSO_%7B4%7D%5D%5E%7B2%7D%20%5BC_%7B6%7DH_%7B6%7D%5D)
Explanation :
Frist of all, all the common terms are cancelled out and written the overall reaction.
As we know that the rate depednant step is the slowest step of the reaction, rate law is :
rate = ![k_{2} [SO_{3}][C_{6}H_{6}]](https://tex.z-dn.net/?f=k_%7B2%7D%20%5BSO_%7B3%7D%5D%5BC_%7B6%7DH_%7B6%7D%5D)
But the problem is that SO3 cannot be written in the overall rate law because it is an intermediate.
Rate law for synthesis of S03 is as follows :
rate = ![k_{1}[H_{2}SO_{4}]^{2}](https://tex.z-dn.net/?f=k_%7B1%7D%5BH_%7B2%7DSO_%7B4%7D%5D%5E%7B2%7D)
Hence when we substitute equation 2 in equation one,
Rate comes out to be = ![k_{overall} [H_{2}SO_{4}]^{2} [C_{6}H_{6}]](https://tex.z-dn.net/?f=k_%7Boverall%7D%20%5BH_%7B2%7DSO_%7B4%7D%5D%5E%7B2%7D%20%5BC_%7B6%7DH_%7B6%7D%5D)
Answer:
The Art of Protein Synthesis
In eukaryotic cells, transcription takes place in the nucleus. During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs.
Explanation:
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Answer:
- <u>Tellurium (Te) and iodine (I) are two elements </u><em><u>next to each other that have decreasing atomic masses.</u></em>
Explanation:
The <em>atomic mass</em> of tellurium (Te) is 127.60 g/mol and the atomic mass of iodine (I) is 126.904 g/mol; so, in spite of iodine being to the right of tellurium in the periodic table (because the atomic number of iodine is bigger than the atomic number of tellurium), the atomic mass of iodine is less than the atomic mass of tellurium.
The elements are arranged in increasing order of atomic number in the periodic table.
The atomic number is equal to the number of protons and the mass number is the sum of the protons and neutrons.
The mass number, except for the mass defect, represents the atomic mass of a particular isotope. But the atomic mass of an element is the weighted average of the atomic masses of the different natural isotopes of the element.
Normally, as the atomic number increases, you find that the atomic mass increases, so most of the elements in the periodic table, which as said are arranged in icreasing atomic number order, match with increasing atomic masses. But the relative isotope abundaces of the elements can change that.
It is the case that the most common isotopes of tellurium have atomic masses 128 amu and 130 amu, whilst most common isotopes of iodine have an atomic mass 127 amu. As result, tellurium has an average atomic mass of 127.60 g/mol whilst iodine has an average atomic mass of 126.904 g/mol.
130.954g of Fe2O3 in 0.82 mol
it will float because it is not heavy enough