Recent content by tua28494

without converting HBr to moles, I get the concentration of Pb. I need how many grams of Pb(NO3)2 so what Volume would I multiply the concentration of Pb to, so I end up with moles of Pb? Would it be multiplied by 0.750 L the same volume as the HBr? I need the moles of Pb to multiply with...

Homework Statement How many grams of Pb(NO3)2 must be added to 750.0 mL of 0.10 M HBr in order for PbBr2 to precipitate? Ksp = 2.1*10^-6 Homework Equations Ksp = [Pb][Br]^2 The Attempt at a Solution For PbBr2 to precipitate, [Pb][Br]^2 must be greater than Ksp 0.750 L * 0.10 M...

Without using the Henderson–Hasselbalch equation, Can I do this? also different Kb value. The NN4CL will completely dissociate adding 0.35 NH4 NH4OH -> NH4+ + OH- 0.65-x. 0.35+x. . x H2O + NH3 -> NH4+ + OH- Kb =1.8 x 10^-5 = [NH4+][OH-]/[NH3]= (0.35+x)(x)/ 0.65-x x =...

I agree thank you

So if the pKa is 7.53 should I use a different Ka?

Homework Statement What is the pH of a saturated Zn(OH)2 solution? Ksp = 1.2 x 10^-17 Homework Equations Ksp = [Zn2+] [OH-]^2 Zn(OH)2 <----> Zn2+ + 2OH- pOH = -log [OH-] pH = 14- pOH The Attempt at a Solution Ksp = 1.2 x 10^-17 = [Zn2+] [OH-]^2 Zn(OH)2 <---->...

Here is a problem I was working on but I do not have a solutions manual because Its an old textbook. I would just like someone to look over my work. Homework Statement Calculate the pH of a 0.67 M NaClO solution. NaClO -> Na+ + ClO- ClO- + H2O -> HCLO + OH- Kw = 1.0*10^-14 Ka...

This isn't really homework, Its just a problem I'm trying to learn to solve. I'm not taking a chemistry course so I'm learning on my own. Calculate the pH of a solution that is 0.65 M NH4OH and 0.35 M NH4Cl. Well we can calulate the pOH = -log(OH-) and 14-pOH = pH I guess I need the...

Two long straight wires are suspended vertically the wires are connected in series and a current from a battery is maintained in them. What happens to the wires? What happens if the battery is replaced by an a-c source. This is a crude schematic of the circuit. ----|i|i---- |...

Can a wheatstone bridge be used to measure very high resitances with good accuracy? If not what problems interfere?