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# Gaseous State

Created by
@NourishingRoseQuartz

### What is the pressure of a gas at 0°C, given that K is the constant and V0 is the volume at 0°C?

• P = V0 / 273.15
• P = V0 × 273.15
• P = K / 273.15
• P = K × 273.15 (correct)
• ### What is the molar volume of a gas at S.T.P./N.T.P. conditions?

• 22.000 L
• 24.800 L
• 30.000 L
• 22.414 L (correct)
• ### What is the expression for the pressure of a gas in a column, given the height of the fluid, density of the fluid, and gravity?

• Pgas = Patm - h dg
• Pgas = Patm ÷ h dg
• Pgas = Patm + h dg (correct)
• Pgas = Patm × h dg
• ### What is the relationship between the volumes of two or more gases at different temperatures, according to Charles' Law?

<p>V1 / V2 = T1 / T2</p> Signup and view all the answers

### What is the name of the French chemist who first studied the variation of volume with temperature in 1787?

<p>Jacques Charles</p> Signup and view all the answers

### If two gases have rates of diffusion r1 and r2, and the volumes of the gases that diffuse are V1 and V2 respectively, what is the relation between r1, r2, V1, and V2?

<p>r1 / r2 = V1 / V2</p> Signup and view all the answers

### What is the application of Graham's law in the separation of isotopes and gaseous mixtures?

<p>Atmolysis</p> Signup and view all the answers

### What is the relation between the rate of diffusion (r) and the pressure (P) of a gas?

<p>r ∝ 1/P</p> Signup and view all the answers

### What is the term for the number of moles effusing per unit time?

<p>Rate of effusion</p> Signup and view all the answers

### What is the term for the decrease in pressure of a cylinder per unit time?

<p>Rate of effusion</p> Signup and view all the answers

### What is the relationship between the volume of a gas and its temperature at constant pressure, according to Charle's Law?

<p>V ∝ T</p> Signup and view all the answers

### What is the constant of proportionality in the ideal gas equation, PV = nRT, in SI units?

<p>8.3143 J mol⁻¹ K⁻¹</p> Signup and view all the answers

### What is the sum of the partial pressures of all gases in a mixture, according to Dalton's Law of Partial Pressures?

<p>The total pressure of the mixture</p> Signup and view all the answers

### What is the relationship between the density of a gas and its temperature, according to the ideal gas equation?

<p>d ∝ 1/T</p> Signup and view all the answers

### What is the application of Avogadro's Law, which states that V₁/T₁ = V₂/T₂ at constant pressure and moles of gas?

<p>Calculating the volume of a gas at different temperatures</p> Signup and view all the answers

### What is the unit of measurement for the volume of a gas?

<p>Litres (L) and millilitres (mL)</p> Signup and view all the answers

### What happens to the kinetic energy of gas molecules when the temperature is increased?

<p>It increases</p> Signup and view all the answers

### What is the force exerted by a gas per unit area of the container walls?

<p>Pressure</p> Signup and view all the answers

### What is the relationship between the temperature and velocity of gas molecules?

<p>Velocity increases with increasing temperature</p> Signup and view all the answers

### What is the SI unit of temperature?

<p>Kelvin (K)</p> Signup and view all the answers

### What is the primary reason for the high kinetic energy of gaseous molecules?

<p>Due to rapid motion in all directions</p> Signup and view all the answers

### What is the characteristic of gases that allows them to be compressed and expanded?

<p>Infinite expansibility</p> Signup and view all the answers

### What is the relation between the mass of a gas and the number of moles of the gas?

<p>The mass of a gas is directly proportional to the number of moles</p> Signup and view all the answers

### What is the characteristic of gases that allows them to exert pressure?

<p>Gases exhibit perfectly elastic collisions with the container</p> Signup and view all the answers

### Why can gases be liquefied?

<p>Due to low temperatures or high pressures</p> Signup and view all the answers

### What is the temperature at which molecular motion ceases?

<p>0 K</p> Signup and view all the answers

### What is the closest distance between the centres of two molecules taking part in a collision?

<p>Molecular diameter</p> Signup and view all the answers

### What is the relationship between the average kinetic energy of a gas and its temperature?

<p>K.E. ∝ T</p> Signup and view all the answers

### What is the expression for the kinetic energy of one mole of gas?

<p>3RT</p> Signup and view all the answers

### What is the relationship between the pressure and volume of a gas, according to the ideal gas equation?

<p>P ∝ 1/V</p> Signup and view all the answers

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