The initial stage in the reaction involves the alkene's double bond interacting with H of HBr. This process protonates the alkene according to Markovnikov's principle, leading to the formation of a carbocation. The rate of this reaction is influenced by the stability of the carbocation formed.
<span>So to tackle your question, apply protonation to all your alkenes based on Markovnikov's rule, and subsequently evaluate the relative stabilities of the carbocation products. A tertiary carbocation is more stable than a secondary one, meaning that an alkene yielding a tertiary carbocation will react more swiftly than one generating a secondary carbocation.
I hope my response is beneficial to you. Thank you for your inquiry. We look forward to addressing more of your questions soon. Wishing you a great day ahead!
</span>
Total mass = 11.20 g
mass of H₂ = 0.6854 g
molar mass of H₂ = 2.016 g/mol
molar mass of Mg = 24.305 g/mol
molar mass of Zn = 65.39 g/mol
w-?
mass of Mg = wm
mass of Zn = (1-w)m
Zn + 2HCl → ZnCl₂ + H₂
mass of H₂, m₁ = (molar mass of H₂ * mass of Zn) / molar mass of Zn = molar mass of H₂ * (1-w) * m / molar mass of Zn
Mg + 2HCl → MgCl₂ + H₂
mass of H₂, m₂ = (molar mass of H₂ * mass of Mg) / molar mass of Mg = molar mass of H₂ * wm / molar mass of Mg
Total mass of H₂ = m₁ + m₂
mass of H₂ = molar mass of H₂ * (1-w) * m / molar mass of Zn + molar mass of H₂ * wm / molar mass of Mg = molar mass of H₂ * {(1-w)/molar mass of Zn + w/molar mass of Mg}
mass of H₂ = molar mass of H₂ * {(1-w)/molar mass of Zn + w/molar mass of Mg}
{(1-w)/molar mass of Zn + w/molar mass of Mg} = mass of H₂ / (molar mass of H₂ * m)
1/molar mass of Zn - w/molar mass of Zn + w/molar mass of Mg = mass of H₂ / (molar mass of H₂ * m)
w * (1/molar mass of Mg - 1/molar mass of Zn) = mass of H₂ / (molar mass of H₂ * m) - 1/molar mass of Zn
w = [mass of H₂ / (molar mass of H₂ * m) - 1/molar mass of Zn] / (1/molar mass of Mg - 1/molar mass of Zn)
w = 0.583 (58.3%)
Answer:
The molar concentration of Fe³⁺ in the unknown solution is 8.01x10⁻⁵M.
Explanation:
When creating a calibration curve in spectrophotometric analysis, you apply Lambert-Beer’s law, which indicates that the absorbance of a compound is directly related to its concentration:
A = E*l*C
Where A stands for absorbance, E is the molar absorption coefficient, l is the path length, and C represents the molar concentration
Using the line equation, you find:
y = 4541.6X + 0.0461
Where Y is the absorbance and X refers to the concentration - we will presume the concentration is expressed in molarity-
Given that the absorbance of the unknown is 0.410:
0.410 = 4541.6X + 0.0461
X = 8.01x10⁻⁵M
The molar concentration of Fe³⁺ in the unknown solution is 8.01x10⁻⁵M.
