A265-gallon storage tank contains 88.5 kg methane (ch4). if the temperature reaches 42 °c, what is the pressure inside the tank?

Answer : The pressure inside the tank is 142.6 atm

Explanation:

Using ideal gas equation:

where,

P = pressure of gas = ?

V = volume of gas =

conversion used :

T = temperature of gas =

R = gas constant = 0.0821 L.atm/mole.K

w = mass of methane gas = 88.5 kg  = 88500 g

M = molar mass of methane = 16 g/mole

Now put all the given values in the ideal gas equation, we get:

Therefore, the pressure inside the tank is 142.6 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.