Answer :
Final answer:
The typical melting point range for a pure compound is 1 - 2 °C, indicating that option 1) 2 degrees Celsius to 4 degrees Celsius falls within this range and accurately represents the melting point range for a pure compound. So, the correct answer is option 1.
Explanation:
The question asks about the width of the typical melting point range for a pure compound. A pure compound typically has a narrow melting point range because impurities within a compound can both lower and broaden this range. According to the material provided, pure samples have a melting point range of 1 - 2 °C. This range is relatively narrow and reflects the change from the start of the melting process to the point at which the compound is fully melted. It's essential to note that this melting point range can be influenced by several factors, including the presence of impurities, which tend to broaden the range. Therefore, for a pure compound, the correct answer to the question is option 1) 2 degrees Celsius to 4 degrees Celsius, which falls within the typical range of 1 - 2 °C for a pure compound's melting point range.
