Question

1. Using only fundamental physical quantities (i.e. the partition function!), calculate $K_{eq}$ for the following reaction at 300 K: $2He(g) \rightleftharpoons He_2(g)$ \begin{tabular}{|l|l|l|} \hline & $He(g)$ & $He_2(g)$ \\ \hline $g_{elec}$ & 1 & 1 \\ $m$ (kg) & $6.65 \times 10^{-27}$ & $1.33 \times 10^{-26}$ \\ $\mu$ (kg) & & $3.33 \times 10^{-27}$ \\ $r$ (Å) & & 2.6 \\ $\tilde{\nu}$ ($cm^{-1}$) & & 86 \\ \hline \end{tabular} Analyze your results. Is your value for $K_{eq}$ \textquotedbl{}big\textquotedbl{} or \textquotedbl{}small\textquotedbl{}? Does this match your expectations? Consider the relative stability of He(g) versus $He_2(g)$.

          1. Using only fundamental physical quantities (i.e. the partition function!), calculate $K_{eq}$ for
the following reaction at 300 K:
$2He(g) \rightleftharpoons He_2(g)$
\begin{tabular}{|l|l|l|}
\hline
 & $He(g)$ & $He_2(g)$ \\
\hline
$g_{elec}$ & 1 & 1 \\
$m$ (kg) & $6.65 \times 10^{-27}$ & $1.33 \times 10^{-26}$ \\
$\mu$ (kg) &  & $3.33 \times 10^{-27}$ \\
$r$ (Å) &  & 2.6 \\
$\tilde{\nu}$ ($cm^{-1}$) &  & 86 \\
\hline
\end{tabular}
Analyze your results. Is your value for $K_{eq}$ \textquotedbl{}big\textquotedbl{} or \textquotedbl{}small\textquotedbl{}? Does this match your
expectations? Consider the relative stability of He(g) versus $He_2(g)$.

1. Using only fundamental physical quantities (i.e. the partition function!), calculate Keq for
the following reaction at 300 K:
2He(g) ⇌ He2(g)

He(g) He2(g)

gelec 1 1

m (kg) 6.65 × 10^-27 1.33 × 10^-26

μ (kg) 3.33 × 10^-27

r (Å) 2.6

ν̃ (cm^-1) 86

Analyze your results. Is your value for Keq big or small? Does this match your
expectations? Consider the relative stability of He(g) versus He2(g).

Added by Melanie H.

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