Calculate the molar volume of gas at STP -

Options

A. 22.8 ml
B. 25.8 ml
C. 22.4 ml
D. 11.2 ml

Explanation

To calculate the molar volume of a gas at Standard Temperature and Pressure (STP), follow these steps:

### Step 1: Understand the Definition of Molar Volume
Molar volume is defined as the volume occupied by one mole of a substance (in this case, a gas) at a given temperature and pressure. At STP, which is defined as 0 degrees Celsius (273.15 K) and 1 atmosphere (atm) pressure, the molar volume of an ideal gas is a standard value.

### Step 2: Know the Standard Value
At STP, the molar volume of an ideal gas is approximately 22.4 liters per mole. This means that one mole of any ideal gas occupies 22.4 liters of volume under these conditions.

### Step 3: Convert to Desired Units (if necessary)
If the question requires the answer in milliliters (mL) instead of liters (L), you can convert liters to milliliters. Since 1 liter is equal to 1000 milliliters, you can calculate the molar volume in mL as follows:

\[ \text{Molar Volume in mL} = \text{Molar Volume in L} \times 1000 \]

### Step 4: Perform the Calculation
Using the molar volume at STP:

\[ \text{Molar Volume in mL} = 22.4 \, \text{L} \times 1000 = 22400 \, \text{mL} \]

### Step 5: Final Answer
Thus, the molar volume of gas at STP is 22.4 liters or 22400 milliliters.

### Summary
- Molar volume at STP = 22.4 L
- In milliliters, it is 22400 mL.