Recall the equation, PV = nRT. For each following situation, no additional gas i
ID: 694894 • Letter: R
Question
Recall the equation, PV = nRT. For each following situation, no additional gas is added (the variable is held constant). 3) A. If the volume is held constant (inside a rigid reaction vessel) as the temperature is increased, what happens to the pressure? (1 point) B. If the pressure is held constant as the the temperature is increased, what must happen to the volume? (1 point) C. If the temperature is held constant and the volume is decreased, what happens to the pressure? (1 point) D. If only the amount of gas is held constant as the temperature is increased, what happens to the volume and pressure? Be careful! (1 point)Explanation / Answer
a.
assume:
P1V1/(T1*n1) = P2V2/(T2*n1)
is n1 = n2, and V1 = V2
P1/T1 = P2/T2
then, increase in T must increase P, since they are indirectly correlated
b.
P1V1/(T1*n1) = P2V2/(T2*n1)
is n1 = n2, and P1 = P2
V1/T1 = V2/T2
if we increase T, then V must increase, due to indirect ratio
c.
P1V1/(T1*n1) = P2V2/(T2*n1)
is n1 = n2, and T1 = T2
then
P1V1 = P2V2
decreae in volume must favour increase in pressure, in order to counterbalance
d.
P1V1/(T1*n1) = P2V2/(T2*n1)
if T and N constant:
P1V1/(T) = P2V2/(Tincreased)
impossilbe to preddict
PV product is increased, so typically P and V must have been incrased, but impossible to predict witouth more info
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