Question

at a given temperature pressure of a gas is reduces to 75% of its initial value and the volume increases by 40% of its initial value. find this temperature of the initial temperature was -10 degree celcius​

Answer 1

Answer:

this is a question where you have multiple equations but not enough information to solve any one so you have to solve them all together.

the first one is that n is the amount of gas. n1 = n2 where 1 and 2 refer to the initial state and the final state respectively.

SO, n1=n2

now according to the ideal gas law,

n1 = P1V1/RT1 and n2 = P2V2/RT2

or, because of equation 1, we can simplify to just

P1V1/T1 = P2V2/T2 (R cancels out because it’s the same on both sides of the equation.

Now, you said the volume increased by 50% so V2 = 1.5V1

you said pressure decreases by 60% (40%