A flash distillation chamber operating at 101.3 kPa is separating an ethanol-water mixture. The feed mixture is 40 mol% ethanol and F = 100 kmol/h. (1)What is the maximum vapor composition and what is the minimum liquid composition that can be obtained if V/F is allowed to vary?

(2) If V/F = 2/3, what are the liquid and vapor compositions?

(3) Repeat step 2, given that F is specified as 1000 kmol/h

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I’m really not sure what’s the answer. sorry

Iam pretty sure that the answer is d

Electron equations of the given changes are as follow,a)                              cu      →      cu⁺²  + 2e⁻b)                              mg⁺²  +  2 e⁻      →      mgc)                              cl⁻    →      cl  +  1e⁻d)                              s  +  2 e⁻    →      s²⁻e)                                o²⁻      →      o  +  2 e⁻f)                              p  +  3 e⁻    →      p³⁻g)                              fe²⁺    →      fe³⁺  + 1 e⁻h)                              s²⁻    →      s⁴⁺  +  6 e⁻