1. A solution of HClO 4 was standardized by dissolving 0.3745 g of primary-standard-grade HgO in a solution of KBr:   HgO(s) + 4 Br - + H 2O →  HgBr 4 2- + 2 OH -       The liberated OH - required 37.79 mL of the acid to be neutralized. Calculate the molarity of the HClO 4.

A 50.0 mL solution of Mg(OH)2 of unknown concentration is titrated with 0.348 M HCI. The equivalence point (end point) is reached after 62.8 mL of HCI were dispensed into the Mg(OH)2 solution. What is the molarity concentration of the base?

Chromic acid, H2CrO4, is used in ceramic glazes and colored glass, and is particularly effective for cleaning insoluble organic residues off laboratory glassware. A 10.0 mL sample of chromic acid solution contains 46.0 mg chromium (which is found in the chromic acid). What volume (in mL) of 0.0700 M KOH is needed to neutralize the 10.0 mL sample of chromic acid?

OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... chemistry student weighs out 0.0570 g of chloroacetic acid (HCH₂CICO2) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He lans to titrate the acid with 0.2000M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. mL Explanation Check AUG 2 0.0 X e S tv W 3/5 X MacBook Air Hu © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center A

A 10.00 mL sample of H2SO4 acid solution requires 22.53 mL of 0.1000 M NaOH for titration. What is the molarity of the acid solution?

A sample of oxalic acid (a diprotic acid of the formula H2C2O4) is dissolved in enough water to make 1.00 L of solution. A 100.0 mL sample of this solution is titrated with a solution of sodium hydroxide (NaOH) of concentration 0.750 M and requires 20.0 mL of sodium hydroxide to reach the end point. Calculate the mass of the original oxalic acid sample. H2C2O4 + 2NaOH → Na2(C2O4)+ 2H2O

6. Acid/base titration is a common method to determine the molarities of acids or bases, the molarity of certain salts can also be determined by titration. It took 22.34 mL of 0.5861 M HCl solution to neutralize 25.00 mL NaNO₂ solution. The acid- dissociation constant of HNO₂ is 4.511 × 10-¹. NaNO₂ + HCl → HNO₂ + NaCl Please answer the following questions. A What is pH of the NaNO₂ solution before titration? Hint, calculate the molarity of the NaNO₂ solution first. pH = Please provider your answer below. ( Check answer 7²² B. M HCl solution was added to the NaNO2 solution? pH = 00 0 Please provider your answer below. What is the pH when 12.78 mL of 0.5861 (0) Check answer C. What is the pH when 14.39 mL of 0.5861 M HCl solution was added to the NaNO₂ solution AFTER the equivalence point? pH = Please provider your answer below. 00 0 °C? pH= Please provider your answer below. Check answer What is the pH at equivalence point at 25 A → ← Check answer ← $ H $

In the titration of 10.00 mL sample of vinegar solution with 0.35 M NaOH as titrant, the initial burette reading was 2.50 mL and the final burette reading was 40.60 mL. Calculate the mass percent of acetic acid (Molar mass = 60.05 g/mol) in the vinegar sample. (The density of the vinegar is 1.00 g/mL) O a. 5.0 % b. 9.0 % O c. 7.0 %, O d. 6.0 % O e. 8.0 %

A 25.00 mL aliquot is withdrawn from the liquid portion of saturated Manganese (II) hydroxide and transferred to an Erlenmeyer flask.  After the addition of methyl orange, a titration with 0.0045 M HCl was performed.  The endpoint was reached after 8.72 mL of the acid was added.   What is the balanced chemical equation? How many moles of hydroxide ions were neutralized in the reaction?  What is the molar concentration of hydroxide in the saturated solution?  What is the molar concentration of Magnesium ion in solution?

MISSED THIS? Watch IWE: Acid-Base Titration; Read Section 5.7. You can click on the Review link to access the section in your e Text. A 17.00 mL sample of an unknown HClO4 solution requires titration with 17.32 mL of 0.1000 M NaOH to reach the equivalence point. Part A What is the concentration of the unknown HC1O4 solution? The neutralization reaction is HClO4 (aq) + NaOH(aq) → H₂O(1) + NaClO4 (aq) Express the molarity to four significant figures. ► View Available Hint(s) M(HCIO4) = Submit Provide Feedback VE ΑΣΦ VO www ? M Next >