Contoh soal fenol kimia
Answer (4)
8\\ -2y>-7x+8\\ y<\frac{7}{2}x-4\\\\ \hbox{ or }\\\\ 7x>2y+8\\ x>\frac{2}{7}y+\frac{8}{7}"> 7 x − 2 y > 8 − 2 y > − 7 x + 8 y < 2 7 x − 4 or 7 x > 2 y + 8 x > 7 2 y + 7 8
8\\\\-2y > -7x+8\ \ \ /:(-2) < 0\ then\ change\ " > "\ to\ " < "\\\\y < 3.5x-4"> 7 x − 2 y > 8 − 2 y > − 7 x + 8 / : ( − 2 ) < 0 t h e n c han g e " > " t o " < " y < 3.5 x − 4
The original inequality 8"> 7 x − 2 y > 8 is a strict inequality. Among the provided options, option A, 7 x − 2 y ≥ 8 , is the closest, although it implies equality, which the original does not. Therefore, while A may be the most relevant, none of the options fully capture the original inequality's meaning.
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Jawaban:Penjelasan:Here are some example chemistry problems related to phenols, focusing on their properties and reactions:1. Nomenclature and Structure:Question:Draw the structure of 2,4,6-trinitrophenol. Explain why this compound is commonly known by another name.Question:Identify the functional group present in phenol. Draw its structure and name two other compounds that also contain this functional group. 2. Acidity and Reactions:Question: Explain why phenol is acidic. How does its acidity compare to that of alcohols and carboxylic acids?Question: Write the balanced chemical equation for the reaction of phenol with sodium hydroxide.Question: Explain how phenol can be converted to 2,4,6-tribromophenol. 3. Reactions with Other Reagents: Question: Describe the reaction of phenol with bromine water. What is the significance of this reaction?Question: Explain the reaction of phenol with concentrated nitric acid.Question: Describe the reaction of phenol with diazomethane. What is the product formed? 4. Synthesis:Question: Outline a synthetic route to convert benzene to phenol.Question: Explain how to synthesize 2-methylphenol (o-cresol) from benzene using a two-step process. 5. Spectroscopy:Question:Explain how IR spectroscopy can be used to differentiate between phenol and cyclohexanol.Question:Explain how UV-Vis spectroscopy can be used to study the properties of phenol.
