Answer:
doublet
Explanation:
Proton MNR is used for the determination of no. of equivalents protons in a molecule
In the molecule, single NMR signal is produced for each set of protons.
Signal splitting is called spin-spin coupling and the splitting of signals depends upon the no. of neighboring proton.
The no. of signal for a proton is equal to n+1, where n is neighboring protons.
In 1-bromo-2-methylpropane, neighboring proton for both methyl protons are one. But the chemical environment of both the methyl protons are different.
Neighboring proton for methyl protons = 1
No. of signal for methyl protons = 1+1 =2
Hence, two doublets will be generated for each set of methyl protons. protons.
Answer:
2,3-dimethylheptane.
CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂
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CH₃ CH₃
Explanation:
Hello there!
In this case, according to the given instructions, it is possible to draw the organic chemical structure by connecting seven carbon atoms along the parent chain with two methyl substituents at the second and third carbon atoms; thus, the resulting structure is:
CH₃ - CH - CH-CH₂-CH₂-CH₂-CH₂
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CH₃ CH₃
Furthermore, the name would be 2,3-dimethylheptane according to the IUPAC rules for nomenclature.
Best regards!
The neutron is electrically neutral.
Answer:
0.0146 M
Explanation:
The relevant chemical reaction equation is as follows:
Cr₂O₇²⁻ + 6Fe²⁺ + 14H⁺ ⇒ 2Cr³⁺ +6Fe³⁺ + 7H₂O
In order to find the concentration of Cr₂O₇²⁻, the number of moles of Cr₂O₇²⁻ in the solution must be found. This can be found by relating it to the number of moles of the analyte (Fe²⁺), which can be calculated as follows:
(35.0 mL)(0.250mol/L) = 8.75 mmol Fe²⁺
This is the amount of Fe²⁺ required to react with all of the Cr₂O₇²⁻ present.The moles of Fe²⁺ and Cr₂O₇²⁻ in the reaction are related as follows:
8.75 mmol Fe²⁺ x (Cr₂O₇²⁻ / 6Fe²⁺) = 1.4583...mmol Cr₂O₇²⁻
The concentration of the Cr₂O₇²⁻ solution is then calculated as follows:
(1.4583...mmol) / 100mL = 0.146 mol/L = 0.146 M
