**CHM 2045C Module
Six Sample Exam Part D Answers**

**Module 5 SamplePretest**** **

**Module
Six Part D Gas Laws 5
points**

__State:__

**Boyle’s Law (In words) Section 12.2 p 550-552**

**The volume of a gas is inversely
proportional to the pressure when the temperature remains constant. **

**V _{1}P_{1}=V_{2}P_{2}**

**Charles Law (in words) Section 12.2 p
552-3**

**The volume of a gas is directly
proportional to the Kelvin temperature if the pressure remains constant.**

** **

__V _{1}__

**T _{1} T_{2}**

**Dalton’s Law of Partial pressures (in words) Section 12.5 p564-566**

**The total pressure of a gaseous
mixture is equal to the sum of the individual pressure of each gas.**

**P _{total}**

**Combined Gas Law Equation (write only the
equation): Section 12.3 p 554-555**

__V _{1}P_{1 }__

**
T _{1} T_{2}**

**Ideal Gas Equation (write only the equation):
Section 12.3 p 557-558**

**PV = nRT**

**Graham’s Law of Effusion: ****Section 12.7 p571-573**

**The rate of effusion of a gas is
inversely proportional to the square root of its molecular mass.**

** **

**Rate of effusion of gas 1 ( molar
mass of gas 2 ) **^{½}

**---------------------------------- =
----------------------------**

**Rate of effusion of gas 2 ( molar
mass of gas 1 ) **^{½}

**Avogadro’s Hypothesis: ****Section 12.1 p 556-557**

**Equal volumes of gases under the
same conditions of temperature and pressure have equal numbers of particles.**

** ****or**** **

**(The volume of a gas at a given
temperature and pressure is directly proportional to the amount of gas in
moles:**

** **

**V
proportional****
n at constant T and P )**