One mole of an ideal monoatomic gas expanded irreversibly in two stage expansion . `"State"-1" "("8.0 bar, 4.0 liters, 300K")` `"State"-2" "("2.0 bar,

Monjur Alahi

One mole of an ideal monoatomic gas expanded irreversibly in two stage expansion .
`"State"-1" "("8.0 bar, 4.0 liters, 300K")`
`"State"-2" "("2.0 bar, 16 liters, 300K")`
`"State"-3" "("1.0 bar, 32 liters, 300K")`
Total heat absored by the gas in the process is :
A. 116 J
B. 40 J
C. 4000 J
D. None of these


0 like 0 dislike
2 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - C
`W = - P_(ext)[V_(2)-V_(1)]`
`W_(1) = - 2 [16-4] xx 100 " "= - 2400 J`
`W_(2) = - [32 -16] = - 16 xx 100 = - 1600 J`
" "`-4000`
`q = - W = 4000 J`

0 like 0 dislike
2 views
Talk Doctor Online in Bissoy App
0.5 mole of an ideal monoatomic gas at STP conditions undergoes a process , if the final volume of gas is `(22.5xxe)` lit, then the entropy change in

`(V_(1))/(V_(2))= (T_(1))/(T_(2)) rArr (22.7//2)/(22.7. e)= (273)/(T_(2))rArr" " T_(2) = 273.(2e)` `DeltaS = nC_(p)lm.(T_(2))/(T_(1))" "0.5 xx (5)/(2)R xx ln. ((273).(2e))/((273))` `= (5)/(4) R(ln 2e) =(5)/(4) R(ln 2 + ln e)" "thereforeif...

2 Answers 1 views
Two mole of ideal diatomic gas `(C_(v.m)= 5//2 R)` at 300 K and 5 atm expanded irreversibly to a final pressue of 2atm against a constant pressue of 1

Correct Answer - `DeltaU = w = - 1247.1 ; DeltaH = - 1745.94J` ` w =nC_(V) (T_(2)- T_(1)) =- P_("ext")[(nRT_(2))/(P_(2))(nRT_(1))/(P_(1))]` `T_(2) = 370 K` `w= nC_(V) (T_(2)- T_(1)) =- 1247.1...

2 Answers 1 views
One mole of an ideal monoatomic gas `(C_(V.M)= 1.5 R)` is subjected to the following sequence of steps : (a) The gas is heated reversibly at constant

Correct Answer - (a) `q= DeltaH = 1558.88, DeltaU = 935.33 ; W= - P(DeltaU) = - 623.55 J mol^(-1)` (b) `W =- 2149.7 J//mol ; DeltaU & DeltaH =...

2 Answers 1 views
One mole of ideal monoatomic gas `(gamma=5//3)` is mixed with one mole of diatomic gas `(gamma=7//5)`. What is `gamma` for the mixture? `gamma` Denote

Correct Answer - B Monoatomic `" "` `n_(1) = 1` Diatomic `n_(2) = 1 gamma_(2) = (7)/(5)` `(n_(1) + n_(2))/(gamma_("mix") - 1) = (n_(1))/(gamma_(1) - 1) + (n_(2))/(gamma_(2) - 1) implies...

2 Answers 1 views
One mole of an ideal monoatomic gas is caused to go through the cycle shown in figure. Then, the change in the internal energy is expanding the gas fr

Correct Answer - D `Pv= nRT` at point `C` `2P_(0)xx4V_(0)=1xxRT_(c)` `T_(c )=[(8P_(0)V_(0))/(R )]` at point a `P_(0)V_(0)=1xxRT_(0)` `T_(0)=(P_(0)V_(0))/(R ) , T_(c )=8T_(0)` change in internal energy `=[ nC_(v)dT]` For path `a`...

2 Answers 1 views
One mole of an ideal monoatomic gas expands isothermally against constant external pressure of `1 atm` from intial volume of `1L` to a state where its

Correct Answer - B `DeltaS =nR l n((V_(f))/(V_(i)))=R l n((P_(i))/(P_(f)))= R l n((300R)/(1Lxx1 atm))=R l n(24.6)`

2 Answers 1 views
Calculate work done by `1` mole of ideal gas expand isothermally and irreversibly from pressure of `5` atm to `2` atm against a constant external pres

`int dW = -int P_("ext")dv` `W_("irr") = -P_("ext")[V_(2)-V_(1)] = -P_("ext")((nRT)/(P_(2))-(nRT)/(P_(1))) = -P_("ext") xx nRT((1)/(P_(2))-(1)/(1P_(1)))` `= -1 xx 1 xx .082 xx 300 ((1)/(2)-(1)/(5)) = -1 xx .082 xx 300 xx...

2 Answers 1 views
One mole of an ideal monoatomic gas `(gamma = (5)/(3))` is mixed with one mole of a diatomic gas `(gamma=(7)/(5))`. (`gamma` denotes the ratio of spec

`gamma_(mix)=(C_(P_("mix")))/(C_(V_("mix")))=(1+(5)/(2)R+1xx(7)/(2)R)/(1xx(3)/(2)+1xx(5)/(2)R)`

2 Answers 1 views
One mole of an ideal monoatomic gas at temperature `T` and volume `1L` expands to `2L` against a constant external pressure of one atm under adiabatic

Correct Answer - B `Delta U=W` `nCV(T_(2)-T)= -Pxx(V_(2)-V_(1))` `(3)/(2)R(T_(2)-T)= -1 " " :. T_(2)=T-(2)/(3xx0.0821)`

2 Answers 1 views
Two moles of an ideal gas is expanded isothermally and irreversibly at `27^(@)C` from volume `V_(1)" to" 2.5 V_(1)"and" 4.17KJ` heat is absorbed from

Correct Answer - `DeltaS_("system")=8 Cal`

2 Answers 1 views
X