Consider the reaction: 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g) Using standard absolute entropies at 298 K, calculate the entropy change for the system when 1.55 moles of Na(s) react at standard conditions. ASTO system Substance Sº (J/K mol) Na(s) 51.2 H₂O(1) 69.9 NaOH(aq) 48.1 H₂(g) 130.7 = J/K
Consider the reaction: 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g) Using standard absolute entropies at 298 K, calculate the entropy change for the system when 1.55 moles of Na(s) react at standard conditions. ASTO system Substance Sº (J/K mol) Na(s) 51.2 H₂O(1) 69.9 NaOH(aq) 48.1 H₂(g) 130.7 = J/K
Chemistry
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![**Entropy Change Calculation for a Chemical Reaction**
Consider the reaction:
\[ 2\text{Na(s)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{NaOH(aq)} + \text{H}_2\text{(g)} \]
Using standard absolute entropies at 298 K, calculate the entropy change for the system when 1.55 moles of Na(s) react at standard conditions.
| Substance | \( S^\circ \) (J/K mol) |
|-----------|-------------------------|
| Na(s) | 51.2 |
| H\(_2\)O(l) | 69.9 |
| NaOH(aq) | 48.1 |
| H\(_2\)(g) | 130.7 |
The entropy change for the system \( \Delta S^\circ_{\text{system}} \) is calculated using the formula:
\[ \Delta S^\circ_{\text{system}} = \sum S^\circ_{\text{products}} - \sum S^\circ_{\text{reactants}} \]
Calculate \( \Delta S^\circ_{\text{system}} \) in J/K.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F03536715-3e1d-4765-9555-fb0adbd33776%2F1992281c-40da-4702-97c3-26f8f0999424%2Fh2ksgl7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Entropy Change Calculation for a Chemical Reaction**
Consider the reaction:
\[ 2\text{Na(s)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{NaOH(aq)} + \text{H}_2\text{(g)} \]
Using standard absolute entropies at 298 K, calculate the entropy change for the system when 1.55 moles of Na(s) react at standard conditions.
| Substance | \( S^\circ \) (J/K mol) |
|-----------|-------------------------|
| Na(s) | 51.2 |
| H\(_2\)O(l) | 69.9 |
| NaOH(aq) | 48.1 |
| H\(_2\)(g) | 130.7 |
The entropy change for the system \( \Delta S^\circ_{\text{system}} \) is calculated using the formula:
\[ \Delta S^\circ_{\text{system}} = \sum S^\circ_{\text{products}} - \sum S^\circ_{\text{reactants}} \]
Calculate \( \Delta S^\circ_{\text{system}} \) in J/K.
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