Suppose a 0.028 M aqueous solution of oxalic acid (H2C2O4) is prepared. Calculate the equilibrium molarity of C₂O̟²˜¯.You'll find information on the properties•of oxalic acid in the ALEKS Data resource.Round your answer to 2 significant digits. A chemist must prepare 800.0 mL of potassium hydroxide solution with a pH of 12.30 at 25 °C.He will do this in three steps:⚫ Fill a 800.0 mL volumetric flask about halfway with distilled water.• Weigh out a small amount of solid potassium hydroxide and add it to the flask.• Fill the flask to the mark with distilled water.Calculate the mass of potassium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits.

1. Follow this step:Get pOH from pH given:pOH=14-pH=14-12.30=1.7get molarity [OH-] from…

Answered: Suppose a 0.028 M aqueous solution of…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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You are performing an experiment in lab that involves the titration of a H2SO4 solution. You titrate the acidic solution with 0.5166 M NaOH and the equivalence point is reached by the addition of 21.76 mL of NaOH solution. Using the balanced equation below, calculate the moles of H2SO4 in the flask. Do NOT include units or write the answer in scientific notation. 2NaOH(aq) + H2SO4(aq) → 2H2O(l) + Na2SO4(aq)
5.00 mL of 2.32 M Fe(NO3)3 is combined with 1.00 mL of 0.50 M HClO4 and 4.00 mL of 2.00 × 10–2 M KSCN. What is the concentration of Fe3+ in the solution after the other reactants are added? Enter your answer with two decimal places. Example: 1.32
An analytical chemist weighs out 0.091 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. He then titrates this solution with 0.1200M NaOH solution. When the titration reaches the equivalence point, the chemist finds he has added 23.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 2 significant digits. mol ?
A CHEM 1151K student notices that it takes 20.0 mL of a 1.5 M solution of KOH to completely neutralize 25.0 mL of carbonic acid (H2CO3). What is the molarity of the acid?H2CO3 (aq) + 2KOH (aq) -----> Na2CO3 (aq) + 2H2O (l) 0.80 M H2CO3 0.40 M H2CO3 1.8 M H2CO 0.60 M H2CO3
2- Suppose a 0.048 M aqueous solution of sulfuric acid (H₂SO4) is prepared. Calculate the equilibrium molarity of SO4. You'll find information on the properties of sulfuric acid in the ALEKS Data resource. Round your answer to 2 significant digits. ÎM
An aqueous solution at 25 °C has a H,O* concentration of 6.x 107 M. Calculate the OH concentration. Be sure your answer has 1 significant digits. Ом M ☐ x10 ×
- Part C Write a balanced ionic equation for this acid-base reaction: Ca(OH)2 (aq) + 2CH3CO₂H(aq) → Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦ A chemical reaction does not occur for this question. Submit Request Answer Part D ? Write net ionic equation for this acid-base reaction: Ca(OH)2 (aq) + 2CH3CO₂H(aq) → Express your answer as a chemical equation. Identify all of the phases in your answer.
Calculate the volume of a 1.420 M NaOH solution required to titrate 43.15 mL of a 1.500 M H₂PO4 solution. Round your answer to 4 significant digits. mL ☐ x10 X
Suppose you want to measure the amount of glucose in a can of soda. You can use the data generated in this experiment to help you, but what other data would you need to collect in order to measure the concentration of glucose in the soda? In other words, what additional experimental step(s) would you perform? B I U Ꭶ X X, 14▾ A In order to measure the amount of glucose in a can of soda, one would need to prepare a series of standard solutions w/ an unknown concentrations of glucose using the 0.3M of glucose sol'n and DI water. Therefore, the glucose oxidase assay would be performed on each standard sol'n and the result values would also be measured by a spectrophotometer. A standard curve may then be plotted by absorbances and the unknown concentration of glucose. It may also be necessary to adjust the pH of the soda can sample to preform additional steps. Change Submission Submitted. Waiting on graded response. 14) Once you have collected data from the step(s) proposed in the previous…
An analytical chemist weighs out 0.159 g of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark titrates this solution with 0.0700 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 25.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits. mol
4. Calculate the calculate the mass of precipitate formed from 5.0 g of strontium chloride. Li3PO4(aq) → Sr3(PO4)2(S) + LiCl(aq) _SrCl₂(aq) + 5. What mass of aluminum hydroxide in needed to neutralize 5.00 g of hydrochloric acid? Al(OH)3(s) + _HCl(aq) → ___AlCl3(aq) + _H₂O(1) 195
NaOH 0.0963M

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