Which figure best represents a concentrated aqueous solution of HI? (Water molec

Question

Which figure best represents a concentrated aqueous solution of HI? (Water molecules are not shown.) A current of 0.150 A is passed thruogh an aqueous CuSO4 solution for 10.0 minutes. plated out? (Assume 100% yield.) The reaction Zn(s) + Ni2+(aq) rightarrow Zn2+(aq) + Ni(s) occurs in the galvanic cell shown. Which statement is true? Electrons flow to the Zn electrode. Na+ ions flow toward the Ni electrode. Electrons flow to the Zn electrode. Na+ ions flow toward the Zn electrode. Electrons flow to the Ni electrode. Na+ ions flow toward the Ni electrode. Electrons flow to the Ni electrode. Na+ ions flow toward the Zn electrode.

Explanation / Answer

17. B is the correct answer ( since equal no 10 H+ and 10I- as well as uniform distribution)

18. C is the correct answer

let the mass be =x

Moles =(x/63.5)

Cu+2+2e--->Cu

2 valence electrons are required for deposition of Cu

F=96,5000

(x/63.5)*96500*2/0.15= 10*60

x = 10*60*0.15*63.5/(96500*2) =0.0296g

19. D

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