know there is only a limit to how many questions you can help me on and I don't know if each blank counts as one, I just have no idea how to start this.
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Q: Calculate the pOH of the solution given the [OH⁻]= 1.0 x 10⁻² M
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Q: 3) What will be the products of these reactants? A. В. H2O2
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Q: calculate the molarity. 24.5 g of sulfuric acid, H2SO4, dissolved in 255 cm3 of water.
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A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...
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Q: The pH of an aqueous solution of 0.429 M formic acid, HCOOH is ________. Calculate the pH of a 0.014...
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- Given the volume of 0.1416 M NaOH used determine the concentration of 16 ml sample each from aquaeous layer (Aq) and benzene layer (Or). To reach the end point of Aquqeous layer and organic layer 13.16 ml and 14.00 ml of NaOH used respectively using Phenolppthalein indicator. What will be the Kd of the system?Calculate the volume in liters of 0.545 M KOH necessary to titrate 0.0113 moles of hydrochloric acid, HCl, to a phenolphthalein end-point. Report the answer with three significant figures.Why does the color change of an indicator take place over arange of about 2 pH units?
- Calculate the volume in milliliters of 0.368 M KOH necessary to titrate 0.0209 moles of acetic acid (HOAc, HC2H3O2) to a phenolphthalein end-point. Report the answer with a precision of two decimal places.) A truck driver carrying a load of lead nitrate (Pb(NO3)2) lost control of his semi- truck after hitting a patch of ice and crashed the truck into Blue Lake, which was right next to the highway. Despite the best efforts of the emergency workers, several of the crates containing lead nitrate were damaged, and the highly soluble compound dissolved immediately. Assuming the lake is initially at circumneutral pH (7), and that the spill resulted the in a total lead concentration of 10-3 M within the lake. Based on the following information, will PbO(s) precipitate out of Blue Lake. Assume all lead nitrate dissociates into Pb+2 and NO3-, no other sources of lead exist in the lake and that no other reactions besides the equations shown below occur. PbO(s) + 2H+ ⇌ PbO(s) + H+ ⇌ PbO(s) + H2O ⇌ PbO(s) + 2H2O ⇌ Pb2+ + H2O PbOH+ + H2O Pb(OH)2o Pb(OH)3- + H+ logKs0/ksp =14 logK1=3.4 logK2=-0.5 logK3=-12Given the chemical equation for the anthocyanin extract of red cabbage as an indicator. HIn + H2O ⇌ H3O+ + In- Using the results from the experiment, identify which of the reactant/product are responsible for the red and green color of the indicator.Notes: solution turns red after adding acid; solution turns blue/green after adding base RED: ________________________ BLUE/GREEN: ________________________ Why is the color violet/blue at pH near 7? Answer in 1 sentence. Hint: What is the relationship of the species responsible for the observed colors? __________________________________________________________________
- For the analysis of a 50 mL sample consisting of carbonate mixtures, when the phenolphthalein indicator is added and titrated with 0.1 M HCl, 10 ml of acid is consumed until the turning point. Since the bromocresol indicator is added after the first turning point and 15 mL of HCl acid is added, find the number of moles in the initial solution..The following graphs represent the behavior of BaCO3 underdifferent circumstances. In each case, the vertical axisindicates the solubility of the BaCO3 and the horizontalaxis represents the concentration of some other reagent.(a) Which graph represents what happens to the solubilityof BaCO3 as HNO3 is added? (b) Which graph representswhat happens to the BaCO3 solubility as Na2CO3 is added?(c) Which represents what happens to the BaCO3 solubilityas NaNO3 is added? [A sample solution contains two unknown ions. A student did a series of tests on the solution, in the order listed below. If a precipitate formed at any stage, the mixture was filtered and further tests were done on the filtrate. The results are as follows. First test:Second test:Third test:Fourth test: solution is a pink colourNaIO3(aq) added and no precipitate formsflame colour is redNa2CO3(aq) is added and no precipitate forms Two possible ions that the solution contains are a.lithium and manganese(II) b. strontium and cobalt(II) c. strontium and manganese(II) d. lithium and cobalt(II)
- How would you use an experimentally determined Ksp value to calculate that Ag2CrO4 should precipitate when 5ml of 0.0040 M AgNO3 are added to 5ml of 0.0024 M K2CrO4. You can come up with your own experimentally Ksp value. I just want to see steps in solvingPhosphoric acid, H3PO4, exists in solution in equilibrium withH2PO4- , HPO42-, and PO4-3. Write expressions for the fractional compositions of these four species.What are the common acid-base indicators for acidimetry-alkalimetry? Indicate the pH range and color change for each indicator.