A balloon has 2 mol A and 8 mol B at 400 K, radius r. More A is added until radius=2r and temperature=500 K. Surrounding pressure=1 atm. Vapour density of A=16; B's density relative to He=16. Sel

Question

A balloon has 2 mol A and 8 mol B at 400 K, radius r. More A is added until radius=2r and temperature=500 K. Surrounding pressure=1 atm. Vapour density of A=16; B's density relative to He=16. Select correct statements.

TestHub · Accepted Answer

The final volume is 8 times initial, so n_f/n_i=8×400/500=6.4. Final n=64 mol and added A=54 mol, C. M_A=32 and M_B=64 g/mol. Initial mass=576 g and volume≈328 L, density≈1.75 g/L, A. Final mass=2304 g and volume≈2626 L, density≈0.88 rather than 8.76 g/L. B mass percentage=512/2304×100=22.2 rather than 12.5. Answer A,C.

Chemistry - Ideal Gas Question with Solution | TestHub

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