Question

Correct gas equation is :
(a) V₁T₂ = V₂T₁ (b) P₁V₁ = T₁
P₁ P₂ P₂V₂ T₂

(c) P₁T₂ = P₂V₂ (d) V₁V₂ = P₁P₂
V₁ T₂ T₁T₂

Answer 1

P1V1=T1T2......... ...

Answer 2

The correct gas equation is also called as the ideal gas law.

Explanation:

Now when looking at the options you have provided they are not correct. As the correct gas equation or ideal gas law clearly mentions the relation between Volume, temperature and Pressure of the gas.

So, it can be stated as PV = nRT.

Now this is for general, but if we have more than one pressure, volume and temperature of a given gas at different conditions, then

P1V1 = n1R1T1.

And similarly we can say that P2V2 = n2R2T2.

Now when we divide the two equations we get  

P1V1/P2V2 = n1T1/n2T2 , as R is constant and does not change.

So we can say that P1V1/P2V2 = T1/T2  , if n does not change.

This is the correct gas equation. We can also write it as P1V1T2 = P2V2T1.