Help me answer the questions below 2b and 3a Thanks NICKEL EQUILIBRIUM 1. Initia

Question

Help me answer the questions below
2b and 3a

Thanks

NICKEL EQUILIBRIUM 1. Initial color of nickel ion solution 2. Color after addition of ammonia paxple bike a. Write the chemical equation for the equilibrium created. 2 Cs) + Why did the color change? Which nickel species is in excess? deep blue]) b. 3, Color after addition ofhydrochloric acid 'nt- Why did the color change? Which nickel species is now in excess? a. b. How could nickel ammonia complex be visually distinguished from the copper complex? Color ( 01-9Wyl Co

Explanation / Answer

Anwer 2b Due to excess of ammonia color changes from light green to blue as following reaction takes place

Ni(OH)2(s) + 6NH3(aq) <==> [Ni(NH3)6]2+(aq) + 2OH-(aq)

Answer 3a Due to the formation nickel chloride when HCl is added it changes color to light green as following reaction takes place

Ni2+(aq) + 2Cl-(aq) <==> NiCl2(s)

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