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Determine each of the following for a 0.500 M HBr solution. 1) Express your answ

ID: 755515 • Letter: D

Question

Determine each of the following for a 0.500 M HBr solution. 1) Express your answer using three significant figures [H3O+]= M 2) Express your answer using three decimal places pH= 3)the balanced equation when reacted with LiOH. Express your answer as a chemical equation. Identify all of the phases in your answer 4) milliliters of HBr solution required to neutralize 40.0 mL of a 0.450 M LiOH solution. V HBr = mL

Explanation / Answer

1/2 eqns: Ni^2+ + 2e- --> Ni(s) E0: -0.24V Zn^2+ + 2e- --> Zn(s) E0: -0.76V the lowest reduction voltage gets reversed as its most readily oxidised (loss of electrons) ie Zn becomes oxidised therefore, Zn+ Ni^2+ --> Zn^2+ Ni .. E0: -0.24 -(-0.76) = 0.52V

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