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#"Sodium azide"#, #NaN_3#, is used in air-bags as a source of dinitrogen...?

Given that the salt decomposes according to the reaction..

#NaN_3(s) rarrNa(g) + 3/2N_2(g)#

What mass of the salt is required to produce a #100L# of dinitrogen gas at #298K?#

Answer 1

Naomi Aronson

#NaN_3(s) rarr Na(s) + 3/2N_2(g)#

#3/2# equiv dinitrogen gas are produced per equiv sodium azide.

We need #n(N_2)# #=# #(PV)/(RT)#

#=((755*mm*Hg)/(760*mm*Hg*atm^-1)xx100*L)/(0.0821*L*atm*K^-1*mol^-1xx298K)#

#~= 4*mol#

And thus we need a mass of sodium azide, #2/3xx4*molxx65.01*g*mol^-1# #=# #173*g#

I'm doing these calculations on paper; could you please redo them?

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Answer 2

Avery Adams

"Sodium azide", NaN3, is used in airbags as a source of dinitrogen gas (N2). When a collision occurs, sodium azide rapidly decomposes to produce nitrogen gas, which inflates the airbag, providing a cushioning effect to protect occupants in the vehicle.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

#"Sodium azide"#, #NaN_3#, is used in air-bags as a source of dinitrogen...?

Given that the salt decomposes according to the reaction.. #NaN_3(s) rarrNa(g) + 3/2N_2(g)# What mass of the salt is required to produce a #100*L# of dinitrogen gas at #298*K?#

Given that the salt decomposes according to the reaction..

#NaN_3(s) rarrNa(g) + 3/2N_2(g)#

What mass of the salt is required to produce a #100L# of dinitrogen gas at #298K?#