Container a holds 717 ml of an ideal gas at 2.20 atm. container b holds 124 ml of a different ideal gas at 4.20 atm. container a and container b are glass spheres connnected by a tube with a stopcock. container a is larger than container b. if the gases are allowed to mix together, what is the resulting pressure?

2.4949 atm

Explanation:

For Container A :  

Pressure = 2.20 atm

Temperature = T K

Volume = 717 mL = 0.717 L (1 mL = 0.001 L)

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

2.20 atm × 0.717 L = n × 0.0821 L.atm/K.mol × T K  

⇒n = 19.2132 / T moles

For Container B :  

Pressure = 4.20 atm

Temperature = T

Volume = 124 mL = 0.124 L (1 mL = 0.001 L)

Using ideal gas equation as:

PV=nRT

Applying the equation as:

4.20 atm × 0.124 L = n × 0.0821 L.atm/K.mol × 298 K

⇒n = 6.3435 / T moles

Total moles = 19.2132 / T moles + 6.3435 / T moles = 25.5567 /T moles

Total Volume = 717 + 124 mL  =  841 mL = 0.841 L

Temperature = T

Using ideal gas equation as:

PV=nRT

Applying the equation as:

P × 0.841 L = 25.5567 /T × 0.0821 L.atm/K.mol × T

⇒Total P = 2.4949 atm

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.