Real gases behave ideally at:

Options

A. low temperature and low pressure
B. low temperature, high pressure
C. high temperature, low pressure
D. high temperature, high pressure

Explanation

To determine the conditions under which real gases behave ideally, we need to analyze the properties of gases and the factors that influence their behavior. Here’s a step-by-step solution:

### Step 1: Understanding Ideal Gases
Ideal gases are hypothetical gases that follow the ideal gas law perfectly, which states that there are no intermolecular forces and that the volume of the gas molecules themselves is negligible.

**Hint:** Remember that ideal gases do not experience any forces of attraction or repulsion between their molecules.

### Step 2: Real Gases vs. Ideal Gases
Real gases deviate from ideal behavior due to intermolecular forces and the volume occupied by the gas molecules. At certain conditions, these deviations can be minimized.

**Hint:** Consider the factors that cause real gases to behave differently from ideal gases, such as temperature and pressure.

### Step 3: Effect of Temperature
At high temperatures, the kinetic energy of gas molecules increases. This increased energy helps overcome intermolecular forces, making the gas behave more ideally.

**Hint:** Think about how temperature affects the motion of gas molecules and their interactions.

### Step 4: Effect of Pressure
At low pressures, gas molecules are farther apart, which reduces the effect of intermolecular forces. This condition also allows the gas to behave more ideally.

**Hint:** Recall that lower pressure means that gas molecules have more space to move around, reducing interactions.

### Step 5: Combining Temperature and Pressure
Combining the effects of high temperature and low pressure, we conclude that real gases behave more ideally under these conditions.

**Hint:** Consider the combination of high kinetic energy (from high temperature) and reduced molecular interactions (from low pressure).

### Conclusion
Based on the analysis, real gases behave ideally at **high temperature and low pressure**. Therefore, the correct answer is option C.

**Final Answer:** Option C: High temperature and low pressure.