DURING THE DETERMINATION OF THE CORRECTION COEFFICIENT OF THE TITRATED 0.1 M (c theoretical) SOLUTION OF SODIUM NITRITE (NaNO2), IT TURNED OUT THAT THE ACTUAL CONCENTRATION OF THE SOLUTION WAS 0.151 M (with practical). SUCH A SOLUTION Choose one answer: a. It is necessary to dilute Ob. Can be used c. You can't use O d. It needs to be strengthened
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- The size of a nitrate ion is 300 pm. In a 0.085 M NaNO3 aqueous solution at 25°C, what is the activity coefficient of NO3- ?if the mean ionic activity coefficient ,? ± of KIO4 in the saturated solution 0.85, what Ksp of KIO4? the information is above in the paper.A 600.0 mg sample consisting of only CaC2O4and Mg C2O4is heated at 500oC converting the two salts to CaCO3and MgCO3. The sample weighs 465.0 mg. If the sample had been heated at 900oC where the products are CaO and MgO, what would the mixture of oxides weigh? Show the clear and complete solution
- It is required to know the concentration of an aqueous solution of H2SO4 that appeared in the laboratoryChemistry III and it's unlabeled. To this end, a student of analytical chemistry carried out the followingProcedure: He took 5.00 mL of a fresh and standardized solution of 0.525M NaOH and brought them to a250.0 mL balloon to be completed with distilled water. Subsequently, he poured 15.00 mL of the solutionH2SO4 of unknown concentration in an Erlenmeyer flask and added 2 drops of phenolphthalein.Using a burette filled with the last NaOH solution, he noticed that when adding 39.40 mL of the hydroxidethe Erlenmeyer solution reached a faint but permanent pink. With the above dataDetermine the concentration and pH of the H2SO4 solution.The mean activity coefficient in an 0.050 molKg-1 LaCl3 (aq) solutions is 0.303 at 25 o C. What is the percentage error in the value predicted by the debye – Huckel limiting law?Compute for the needed values for slution preparation: 1. Prepare the following solution quantitatively using boiled distilled water per group:250.0 mL 0.0500 M standard HCl solution from 1.0 M HCl 2. a. 500.0 mL 0.1000 M stock EDTA solutionb. 100.0 mL 0.0500 M stock Ca2+ solution
- As solution was prepared by dissolving 5.76g of KCl.MgCl2.6H2O (277.85g/mol) in sufficient water to give 2.000L. calculate a. pMg for the solution b. pCl for the solutionDON’T ROUND OFF ANY COMPUTATIO UNTIL TO THE FINAL ASWER. (OR AT LEAST USE 4 DECIMAL PLACES) USE: GIVE, REQUIRED, SOLUTION FORMAT) Determine the percentages of each element in benzoic acid in terms of: 1. percent by weight b. the mole percentage.In standardizing a solution of NaOH against 1.431g of KHC8H4O4, the analyst uses 35.50 mL of the alkali and has to run back with 5.12 mL of acid ( 1mL ≎0.0031g Na2O) What is the normality of NaOH?
- An equimolar solution of ammonium sulfate, sodium chloride, and magnesium nitrate has an ionic strength of 0.15M. What is molar concentration of the solution wiht respect to each solute? a. 0.010 b. 0.015 c. 0.020 d. 0.025If I have a concentrated stock chemical at 4.4 Molar, and I need 350mL at 1.5 Molar, how do I make this?What weight of the soda ash (impure Na2CO3) should be taken for analysis in order that the number of milliliters of 0.500 N acid used will be equal to one-half of the percentage of Na2CO3 in the sample? Note: Please include the complete solution. Thanks!