Answer: The standard potential is -0.141 V
Explanation:
To calculate the Gibbs free energy for given value of equilibrium constant we use the relation:
where,
= standard Gibbs free energy = ?
R = Gas constant = 8.314 J/Kmol
T = temperature = 298 K
K = equilibrium constant =
Putting values in above equation, we get:
Also
where n = no of electrons gained or lost = 3
F = Faradays constant = 96500 C
= standard potential = ?
Thus the standard potential is -0.141 V
M = 20 g
Volume = 12 cm³
D = m / V
D = 20 / 12
D = 1.67 g/cm³
hope this helps!
Answer:
pH = 1.30
Explanation:
The reaction that would take place between HCl and NaOH is:
In this problem, the 0.1 moles of NaOH would react with 0.1 moles of HCl, <u>leaving 0.1 moles of HCl unreacted</u>.
These 0.1 HCl moles are dissolved in 2 liters, thus the concentration of H⁺ species is:
- [H⁺] = 0.1 mol / 2 L =0.05 M
Finally we <u>calculate the pH</u>:
Answer:
Methylpropane has the lowest molecular mass among all of the given compounds. Thus, 2-Methylpropane has the lowest boiling point among the given options.
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