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A Researcher reads directions that call for addition of 25.0 mL of anhydrous ethanol (ethyl alcohol). From among the bottles in the lab, which one should she select
a) Assuming ideal behavior, what is the solubility of AgCl(s) in 1.00 x 10-4 M NaCl if only Ksp is considered? (b) What is the solubility AgCl(s) if all 4 equilibria are considered for the 1.00 x 10
Using the information given, write an expression which would give the solubility, S, as a function of the chloride ion concentration, [Cl-]. This means include all the equilibria.
How many moles of AgCl(s) will dissolve in 1.00L of 0.100 M NaCN and what are the concentration of the various ions in solution. K = 7.08 x 1019 for the reaction Ag+(aq) + 2 CN- ? Ag(CN)2-
Determine the same activity coefficients for H+ and OH- in the same aqueous MgCl2 solution using the Extended Debye-Huckel law. -log
What is the H3O+ concentration and the pH for a 0.001M HCl solution in one liter of a 0.01M CaCl2 solution. Solution is ideal. Real solution using DH Limiting Law
Using the Extended DH Equation, we calculate the activity coefficient, of an ion in solution as, -log = [ 0.253 ± 0.008]/ [ 3.50 ± 0.03]. What is the error in. if the principal uncertai
Calculate the concentration of H3O+, OH-, NH4+, and NH4+, and NH3 in 1.00 x 10-6 M NH4Cl solution. Kw = 1.00 x 10-14 and K = 5.52 x 10-10 for NH4+ H2O ?=? NH3 + H3O+.
If 0.200 M NaI is slowly added to 20.00 mL of a solution that is 0.0500 M Pb2+, 0.0400 M Hg22+, 0.0600 M Ag2+, and 0.0800 M Tl+, in what order do the iodides precipitate
What is the solubility of Ca(OH)2 in 0.0500 M NaOH assuming both Ideal and Real behavior
separation and purification scheme 50% toluic acid, 40% fluorene, 10% 1,4-dibromobenzene
What would happen to the A450 valure for a sample as test tube#10(is included 1ml of 0.0025M Fe(NO3)3 , 1ml of 0.0025M KSCN, and 5ml of 0.1M HNO3 ) ,if accidentally added 5 drops of disodium hydroge
You performed these reactions in an acidic solution(diluting with 0.1MHNO3). This is because iron forms an insoluble hydroxide even when these solutions do not contain excess hydroxide ion (i.e. eve
What would happen to the A450 value for a smaple which include : 1mL of 0.0025M Fe(NO3)3 + 1mL of 0.0025M KSCN + 5.0mL of 0.1M HNO3 , if you accidentally added 5 drops of disodium hydrogen phosphate
The minimum energy needed to eject an electron from a sodium atom is 4.41 * 10^-19 J What is the maximum wavelength of light, in nanometers, that will show a photoelectric effect with sodium
With the cobalt ion equilibrium- CoCl4^2- +6 H2O -> CO(H2O)6^2+ +4Cl-, what is the effect on the [CO(H2O)6^]2+ molarity when chloride is added. which species is of the cobalt complex will increas
(a) 0.519 M acetic acid (weak acid with Ka = 1.8e-05). (b) 0.802 M hydrocyanic acid (HCN) (weak acid with Ka = 4.9e-10). (c) 0.693 M pyridine (weak base with Kb = 1.7e-09).
(a) What is the pH of this buffer (b) What is the pH of the buffer after the addition of 0.48 mol of NaOH. (assume no volume change) (c) What is the pH of the original buffer after the addition of 0
what volume of carbone dioxide ,measured at STP,would result from the reaction of 9.786 kg of oxygen with excess pentane
What temperature would be observed during the entire distillation. B) If a thermometer were immersed below the surface of the liquid of the boiling flask, what temperature would be observed. C) What
Using the alpha diagram for carbonate in a closed system, at what pH would the molar CO2 concentration be approximately equal to the molar bicarbonate concentration
Given: NaOh 0.108 M HCl 7.80 mL calculate the molar amount of NaOH used in titration HCl
If the dose of Na2CO3 is 100 mg/L , the volume of EDTA is 9.5 mL and the total hardness is 95 mg/L as CaCO3 calculate the % total hardness removed.
When CuCl2 is heated to 100C, the compound is dehydrated. If 0.235g of CuCl2 * x H20 yields 0.185 g CuCl2 on heating, what is the exact formula of the hydrate
In Ag+S8->Ag2S reaction, 2g of Ag and 2g of S8 are alowed to reac to completion what is limiting reactant, how many grams of Ag2S are produced, and how many grams of excess reagent remain