Recent content by cuigm371

Thank you very much indeed! looking back I think I was confused initially by the way it was given, Ni 2+ + 2H2O <-> Ni(OH)2 (s) + 2H+ and forgot to go to the definition of the solubility product. this is a good lesson learned.

Refer to the textbook page attached. Ni(OH)2 = Ni2+ + 2(OH)- Ks = [Ni]2+ x (OH)-^2 = 10^(-12.73) Ni+ ranges from 1 to 0.01M, so OH- can be calculated accordingly. Is this right now?

I believe it is right as below. THANK YOU VERY MUCH! H+ + OH- = H2O Kw Ni(OH)2= Ni2+ + 2OH- Ka so, for Ni2+ + 2H2O = Ni(OH)2 + 2H+ K = Kw^2/Ka

Ni(OH)2 <-> Ni 2+ + 2 (OH)- and Ksp = [Ni2+] [OH-]^2/[Ni(OH)2] this seems more reasonable. Correct?

Thank you for pointing out. the formula should've been: Ksp= [Ni(OH)2] * [H+]^2/[Ni+] = 10^(-12.73) I still am not clear what to do next. Could you please advise?

Homework Statement Hey guys, I am preparing a technical exam and am facing an exam problem below: Ni is electrodeposited from an aqueous sulphate solution that has a composition that fluctuates from 1 to 0.01M due to changes in the feed composition of the process. a) what is the pH range that...

I did some search but with not much luck. Thanks for the link provided which is helpful but not addressing the question. I am preparing for an exam for the course of Fracture and Failure Analysis and this is one of the past questions that I have seen.

Why are materials whose yield stresses are highly strain-rate dependent more susceptible to brittle fracture than those materials whose yield stresses do not exhibit marked strain-rate dependence