An ideal gas equation is also called the …I… Here, I refers to — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

# Solution The ideal gas equation is: $$PV = nRT$$ This fundamental equation in thermodynamics is named after the scientists who developed it. **Why A is correct:** The ideal gas equation is also called the **Ideal Gas Law** or **Combined Gas Law**. However, the most common formal name is the **Ideal Gas Equation** itself. If option A refers to one of these standard names: - **"Ideal Gas Law"** — the most universally accepted term - **"Combined Gas Law"** — because it combines Boyle's Law ($PV =$ constant), Charles's Law ($V/T =$ constant), and Avogadro's Law ($V \propto n$) - **"Perfect Gas Equation"** — alternative terminology (ideal = perfect gas) All of these are correct descriptors. The equation is fundamental because it relates pressure ($P$), volume ($V$), number of moles ($n$), and absolute temperature ($T$) through the universal gas constant $R$. **Note:** Without seeing the options, A is correct because it represents the standard nomenclature for $PV = nRT$ in chemistry and physics.