\(\text{C}_3\text{O}_2, \, \text{SO}_2\)
When carbon (\(\text{C}\)) reacts with concentrated sulfuric acid (\(\text{H}_2\text{SO}_4\)) and is heated, the reaction produces carbon dioxide (\(\text{CO}_2\)) and sulfur dioxide (\(\text{SO}_2\)) gases. The sulfuric acid provides the sulfur that reacts with carbon to form sulfur dioxide, while the carbon dioxide is a product of the oxidation of carbon.
| Molisch's lest | Barfoed Test | Biuret Test | |
|---|---|---|---|
| A | Positive | Negative | Negativde |
| B | Positive | Positive | Negative |
| C | Negative | Negative | Positive |
Adsorption of a gas on a solid adsorbent follows the Freundlich adsorption isotherm. If \(x\) is the mass of the gas adsorbed on mass \(m\) of the adsorbent at pressure \(p\), and from the graph of \(\log\left(\frac{x}{m}\right)\) vs. \(\log p\) we obtain a slope of \(\tfrac{1}{2}\), then the extent of adsorption is proportional to:
