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The melting point of iodine is 114 °C - OCR Gateway - GCSE Chemistry - Question 11 - 2021 - Paper 1
Question 11
The melting point of iodine is 114 °C. The boiling point of iodine is 184 °C. What is the state of iodine at room temperature? A Aqueous B Gas C Liquid D Solid ... show full transcript
Worked Solution & Example Answer:The melting point of iodine is 114 °C - OCR Gateway - GCSE Chemistry - Question 11 - 2021 - Paper 1
Step 1
What is the state of iodine at room temperature?
Answer
To determine the state of iodine at room temperature, we need to compare the room temperature (approximately 20 °C) with the melting point and boiling point of iodine.
- The melting point of iodine is 114 °C, which means that below this temperature, iodine exists as a solid.
- The boiling point of iodine is 184 °C, which means that above this temperature, iodine exists as a gas.
Given that room temperature (20 °C) is below the melting point of iodine (114 °C), we can conclude that iodine is in the solid state at room temperature. Therefore, the correct answer is: D Solid.