Exclange Ica 3. A student is given an unknown to identify. The unknown is colorless, odorless, and neutral. It produces no precipitates when reacted with any of the three halides, Cl-, Br, and I. It produces a yellow precipitate when added to sodium chromate. Which of the following could it be? Write its exchange reaction with sodium chromate. HCI NaOH NH,OH BaCl, K,CrO, AgNO, NISO, 4. A second student in the lab is given the same list of possibilities as the student in question 3 above. This unknown, while also colorless, odorless and neutral, gave a brownish precipitate when mixed with NaOH, and a white precipitate when added to BaCl,. Reactions with the other halides gave yellow precipitates. What unknown do they have? Write the equation for the exchange reaction with the unknown and NAOH. Also, write the balanced reaction between the unknown and BaCl,.

Exclange Ica 3. A student is given an unknown to identify. The unknown is colorless, odorless, and neutral. It produces no precipitates when reacted with any of the three halides, Cl-, Br, and I. It produces a yellow precipitate when added to sodium chromate. Which of the following could it be? Write its exchange reaction with sodium chromate. HCI NaOH NH,OH BaCl, K,CrO, AgNO, NISO, 4. A second student in the lab is given the same list of possibilities as the student in question 3 above. This unknown, while also colorless, odorless and neutral, gave a brownish precipitate when mixed with NaOH, and a white precipitate when added to BaCl,. Reactions with the other halides gave yellow precipitates. What unknown do they have? Write the equation for the exchange reaction with the unknown and NAOH. Also, write the balanced reaction between the unknown and BaCl,.

General Chemistry - Standalone book (MindTap Course List)

11th Edition

ISBN:9781305580343

Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Chapter17: Solubility And Complex-ion Equilibria

Section: Chapter Questions

Problem 17.128QP: The text describes zinc hydroxide as an amphoteric hydroxide, so Zn(OH)2 is soluble in basic...

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The text describes zinc hydroxide as an amphoteric hydroxide, so Zn(OH)2 is soluble in basic solution. What is the molar solubility of Zn(OH)2 in 1.00 M NaOH? What is the pH of the equilibrium solution?
2. Using the procedure described in this module, a student determined the percent KHP in an impure sample of KHP. A 3.150-g sample of impure KHP required 41.50 mL of 0.1352M NaOH solution for titration. (a) Calculate the number of moles of NaOH required for the titration. (b) Calculate the number of moles of KHP present in the impure sample of KHP. (c) Calculate the number of grams of KHP present in the impure sample. (d) Calculate the percent of KHP in the impure sample, using Equation 8. Equation 8: percent KHP in the impure sample, % = ( mass of KHP in the sample,g/ mass of sample analyzed, g) (100%)
A student weights out 1.118g of impure KHP, dissolves the sample in deionized water and titrate it with 0.1001 M NaOH solution. If the titration requires 27.10 mL of the NaOH solution, and none of the impurities react with NaOH, what is the percent KHP in the sample?
Please write the balanced chemical equations on the observations of heating NaHCO3 and bubbling the gas made by decomposition through the Ca(OH)2 solution in the presence of bromothymol (blue acid base indicator solution) Please write out in chemical equation form!
A student is asked to standardize a solution of calcium hydroxide. He weighe out 0.920 g potansium hydrogen phthalate (0CO, treat this an a moneprotic adid). It requires 19.0o mt of calcium hydroxide to reach the endpoint. A. What is the molarity of the calcium hydroxide solution IM This calciunm hydroxide solution is then used to trate an unknown solution of hydrobromic acid. B. If 24.8 ml of the calcium hydroxide solution is required to neeutralize 29.1 mt of hydrobromic acd, what is the molarity of the hydrobromic acid solution?
Suppose you have a solution that might contain any or allof the following cations: Ni2+, Ag+, Sr2+, and Mn2+. Additionof HCl solution causes a precipitate to form. After filteringoff the precipitate, H2SO4 solution is added to the resultingsolution and another precipitate forms. This is filtered off,and a solution of NaOH is added to the resulting solution.No precipitate is observed. Which ions are present in each ofthe precipitates? Which of the four ions listed above must beabsent from the original solution?
Use the References to access important values if needed for this question. What is the equilibrium Al concentration when 3.25 Lof a 0.119 M aluminum bromide solution are mixed with 3.03 Lof a 0.243 M sodium phosphate solution? (A*) = M
What mass of 3Fe(OH)3 would be produce if 250 mL of 0.250M of NaOH were added to a solution containing FeCl3?
A weak acid is added to a strong base. The base is neutralized last, giving a mole ratio to acid remaining of 2:3. If Ka is 1.0 x 10-5, what is the ph of the solution?
Tungsten trioxide (Wo,) has a rich yellow color and is often used as a pigment in ceramics and paints. To test a ceramic vase for its WO, content, a 10.11 g sample of the vase was ground and reduced with Pb(Hg) to convert any WO, to W+. The resulting w* was transferred to 500.0 mL. of 1.00 M HCI. A 100.00 ml. aliquot of the HCl solution required 13.18 mL of 0.08251 M I 1.00M potassium permanganate (KMNO,) to reach the purple endpoint. A blank required 0.15 ml.. Balance the redox reaction. redox reaction: Mno; + w* Mn* + wo?* Determine the percent Wo, in the ceramic sample. percent WO,:
50.00 mL of a solution containing 0.080 M H2SO4, and 0.20 M KIO3 Calculate the mass of potassium iodate required.
A 0.7041-g sample of impure mercury(II) oxide was dissolved in an unmeasured excess of potassium iodide. Reaction. Calculate the percentage of HgO in the sample if titration of the liberated hydroxide required 40.67 mL of 0.1064 M HCl.

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