Explanation:
We have seen that there are many gas laws :that is the generalization made on gases relating its volume , pressure , temperature and moles of gas .
Gay lussac's law
According to it : At constant volume ,for given mole of gases :Pressure varies directly with temperature .
That is :
P ∞ T
or , P₁/T₁=P₂/T₂
In the above question , it is asked to find the pressure at temperature 105C :
P₁=0.750 atm=
T₁=45 C = 318K
P₂=?
T=105 C =378K
We have :
P₁/T₁=P₂/T₂
0.750/318=P₂/378
P₂= 0.750 X 105/45 = 1.75atm