Answer:
⇒D_AB= 1.21×10^(-9)
Explanation:
Wike chang equation is given as:

Where
D_AB= diffusivity of chlorine in water
Φ= 2.26 for water as solvent
ν= 0.0484 for chlorine as solute
M_B = Molecular weight of water
τ= temperature=289 K
μ= viscosity = 1.1×10^{-3}
Now putting these values in the above equation we get

⇒D_AB= 1.21×10^(-9)
THE COMPOUND IS: ethnoxybutane
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[H2O]/t should be 0.085M/s
this is because of the coefficients in front of H2S and H2O being the same.
the significance of this answer is that the H2S disappears at the same rate H2O appears.