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A liquid can exist only...

A liquid can exist only

A

between triple point and critical temperature

B

at any temperature above the melting point

C

between melting point and critical temperature

D

between boiling and melting temperature.

Text Solution

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The correct Answer is:
To determine the conditions under which a liquid can exist, we need to understand the concepts of melting point, boiling point, and critical temperature. Here’s a step-by-step solution: ### Step 1: Define the States of Matter - Matter exists in three primary states: solid, liquid, and gas. The state of a substance depends on temperature and pressure. ### Step 2: Understand the Melting Point - The melting point is the temperature at which a solid turns into a liquid. For water, this occurs at 0°C (273.15 K) at standard atmospheric pressure. ### Step 3: Understand the Boiling Point - The boiling point is the temperature at which a liquid turns into a gas. For water, this occurs at 100°C (373.15 K) at standard atmospheric pressure. ### Step 4: Understand the Critical Temperature - The critical temperature is the temperature above which a gas cannot be liquefied, regardless of the pressure applied. For water, this is approximately 374°C (647.1 K). ### Step 5: Identify the Range for Liquid Existence - A liquid can exist between its melting point and boiling point. Therefore, for water, the liquid phase exists between 0°C (273.15 K) and 100°C (373.15 K) at standard atmospheric pressure. ### Conclusion - In summary, a liquid can exist between the melting point and boiling point of the substance. For water, this range is from 0°C to 100°C. ### Final Answer - A liquid can exist only between the melting point and boiling point of the substance. ---
To determine the conditions under which a liquid can exist, we need to understand the concepts of melting point, boiling point, and critical temperature. Here’s a step-by-step solution: ### Step 1: Define the States of Matter - Matter exists in three primary states: solid, liquid, and gas. The state of a substance depends on temperature and pressure. ### Step 2: Understand the Melting Point - The melting point is the temperature at which a solid turns into a liquid. For water, this occurs at 0°C (273.15 K) at standard atmospheric pressure. ...
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