Q28

Item 15 Part A In which of the following aqueous solutions would you expect AgF to have the highest solubility? O 0.015 M KF O 0.00750 M LİF 0.030 MAGNO, O 0.023 M NaF AgF will have the same solubility in all solutions. Submit Request Answer

Question 20

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QUESTION 21 A 1.0 L buffer solution is 0.250 M HC2H3O2 and 0.050 M LIC2H3O2. Which of the following actions will destroy the buffer? O adding 0.050 moles of NaOH O adding 0.050 moles of HC2H3O2 Ō adding 0.050 moles of LIC2H3O2 adding 0.050 moles of HCl None of the above will destroy the buffer.

This is about determinition of acid content in vinegar through titration, please answer the questions. Please answer only the items nummber 4-5. i only put other questions for guide. 1. What is the purpose of standardization? 2. What is the primary standard used (name and formula)? ANS: KHP 3. Suppose that the KHP is not completely dry. Will the reported molar concentration of the sodium hydroxide solution be higher, lower, or unaffected? Explain. 4. In preparing the buret for titration the final rinse is with the NaOH titrant rather than with distilled water. Explain. 5. The procedure suggests the addition of only 2 drops of phenolphthalein. What will be the effect to the analysis if larger amount of phenolphthalein is added?

The concentration of the saturated solution is 1.15 x 10-4 M Ag2CO3. What is the concentration of the CO32- ion? [CO3-] = [?] x 10¹¹ M Exponent (yellow) Coefficient (green) All Rights Rocamind Enter

A buffer solution is 0.337 M in H₂SO3 and 0.271 M in KHSO3. If Kal for H₂SO3 is 1.7 × 10-2, what is the pH of this buffer solution? X pH = = Submit Answer Retry Entire Group 2 more group attempts remaining

The molar solubility of silver chromate in a 0.215 M ammonium chromate solution is  __________M.

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#12

Question 6 of 25 - /1 E One of the most common buffers used in protein chemistry is a weak base called TRIS (the nitrogen atom of the amino group is the basic portion of the molecule): HO. -NH2 (HOCH,),CNH, TRIS HO HO. A biochemist prepares a buffer solution by adding enough TRIS and 12 M HCI to give 1.0 L of a buffer solution that has concentrations [TRIS] = 0.34 M and [TRISH*] = 0.71 M. (pKp of TRIS is 5.91.) (a) Calculate the pH of the buffer solution. pH = i (b) Suppose that 9.3 mL of 12 M HCl is added to 12 L of the buffer solution; calculate the new pH of the solution. pH = i %D

The concentration of the saturated solution is 1.15 x 10-4 M Ag2CO3. What is the concentration of the Ag+ ion? [Ag+] = [?] x 10 M Exponent (yellow) Coefficient (green) Enter

Study Read Verb Math Com A 150.0 ml sample of 0.250 M HCN is titrated with 50.0 ml of 0.200 M NAOH. What are the concentrations of HCN and CN. in solution after the neutralization reaction occurs? 4. HCN + NootH z N.CN + H2O Inter. Геас Net Iomc ner HCMayt OH aa) =CN Tog)+ H,Oe) oci: ami Capa are ina са