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1 a solution contains both nahco3 and na2co3 titration of a 5000 ml portion to a phenolphthalein end point requires 2245 ml of 01247 m hcl a second 5000 ml aliquot requires 4737 ml of the hcl solution

1 a solution contains both nahco3 and na2co3 titration of a 5000 ml portion to a phenolphthalein end point requires 2245 ml of 01247 m hcl a second 5000 ml aliquot requires 4737 ml of the hcl solution

2021年8月4日

A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein end point with 25.0 mL of 0.100 M NaOH. The student then adds 13.0 mL of 0.100 M HCl. The pH of the resulting solution is 4.70. How is the value of p Ka for the unknown acid related to 4.70? | Numerade

A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein end point with 25.0 mL of 0.100 M NaOH. The student then adds 13.0 mL of 0.100 M HCl. The pH of the resulting solution is 4.70. How is the value of p Ka for the unknown acid related to 4.70? | Numerade

2021年6月8日

SOLVED: 10.0 mL of a sulfuric acid solution required 25.77 mLof a 0.106 M NaOH solution to reach the phenolphthalein end-pointin a titration. What is the molarity of this diprotic acidsolution? It may be helpful to write a balanced chemicalequation for the acid-base neutralization reaction that occurs.

SOLVED: 10.0 mL of a sulfuric acid solution required 25.77 mLof a 0.106 M NaOH solution to reach the phenolphthalein end-pointin a titration. What is the molarity of this diprotic acidsolution? It may be helpful to write a balanced chemicalequation for the acid-base neutralization reaction that occurs.

已浏览 101 次2021年9月25日

SOLVED: A 10 ml water sample is titrated for alkalinity by using 0.02 N sulfuric acid. To reach the phenolphthalein end point requires 3.0 ml, and an additional 2.0 ml is added for methyl orange color change. Calculate the phenolphthalein and total alkalinity. Give the ionic forms of the alkalinity present.

SOLVED: A 10 ml water sample is titrated for alkalinity by using 0.02 N sulfuric acid. To reach the phenolphthalein end point requires 3.0 ml, and an additional 2.0 ml is added for methyl orange color change. Calculate the phenolphthalein and total alkalinity. Give the ionic forms of the alkalinity present.

2021年10月17日

SOLVED: 5.00 mL aliquot of wine vinegar was titrated with 0.1104 M NaOH requiring 32.88 mL to reach phenolphthalein end point. If vinegar has a density of 1.055 g/mL, calculate % acetic acid in the vinegar sample

SOLVED: 5.00 mL aliquot of wine vinegar was titrated with 0.1104 M NaOH requiring 32.88 mL to reach phenolphthalein end point. If vinegar has a density of 1.055 g/mL, calculate % acetic acid in the vinegar sample

2021年8月13日

SOLVED: A 0.2521 g sample of an unknown weak acid is titrated with a 0.1005 M NaOH, requiring 42.68 mL to reach the phenolphthalein endpoint. Determine the compound's equivalent weight. Which of the following compounds is most likely to be the unknown weak acid?

SOLVED: A 0.2521 g sample of an unknown weak acid is titrated with a 0.1005 M NaOH, requiring 42.68 mL to reach the phenolphthalein endpoint. Determine the compound's equivalent weight. Which of the following compounds is most likely to be the unknown weak acid?

2021年9月25日

SOLVED: A. A 50.00-mL sample of a citrus drink requires 17.62 mL of 0.04166 M NaOH to reach the phenolphthalein end point. Express the sampleâ€™s acidity as grams of citric acid, C6H8O7, per 100 mL.B. Limestone consists mainly of CaCO3, with traces of iron oxides and other metal oxides. To determine the purity of a limestone, a 0.5413-g sample is dissolved using 10.00 mL of 1.396 M HCl. After heating to expel CO2, the excess HCl was titrated to the phenolphthalein end point, requiring 39.96 mL o

SOLVED: A. A 50.00-mL sample of a citrus drink requires 17.62 mL of 0.04166 M NaOH to reach the phenolphthalein end point. Express the sampleâ€™s acidity as grams of citric acid, C6H8O7, per 100 mL.B. Limestone consists mainly of CaCO3, with traces of iron oxides and other metal oxides. To determine the purity of a limestone, a 0.5413-g sample is dissolved using 10.00 mL of 1.396 M HCl. After heating to expel CO2, the excess HCl was titrated to the phenolphthalein end point, requiring 39.96 mL o

已浏览 101 次2022年4月7日

SOLVED: The end point (or equivalence point) of your acid / basetitration between HCl and NaOH occurred when:-the acid and the base neutralized each other.-the phenolphthalein indicator turned a faint pink color.-the moles of H = the moles of OH-.-Both A and B are correct.-A, B, and C are correct.

2021年9月29日

SOLVED: 30.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 35.39 mL of a 0.1109 M NaOH solution.What is the concentration of the H2SO4 solution?

2021年8月17日

SOLVED: Select Strong Acid as the analyte and Phenolphthalein as the indicator in the titration interactive.Analyte: 25.0 mL Strong Acid, 1.0 M.To the tenths place, determine the volume of titrant added at each of these points.Indicator: Phenolphthalein.pH = 13.22.Equivalence point: Incorrect.End point: Incorrect.Titrant Added (mL):Suppose that you did not know the concentration of the acid. Use the end-point volume, the concentration of the base, and the volume of the acid to calculate the conc

2021年9月29日

Phenolphthalein-Chemistry Experiment Class 12th

已浏览 75 次1 个月前

YouTubeMahadev Future Point - Mfpcc

Acid base titration end point with Phenolphthalein#shorts #youtubeshorts #chemistry

已浏览 99 次1 个月前

YouTubeChemistry Lovers Dr. Himali Hewage

There are three acid-base indicators. Methyl orange (end point at `pH=4`), bromothymol blue

已浏览 80 次2020年7月12日

YouTubeDoubtnut

There are three acid-base indicators: methy`1` orange (end point at `pH = 4)`, bromothymol

已浏览 4 次2020年7月12日

YouTubeDoubtnut

Axis House Magnesium Oxide CMA Activity Test

已浏览 2169 次2012年5月8日

YouTubeCreative Imagineering

Acid Base Titration End Point with Phenolphthalein Indicator #chemistry #youtubeshorts

已浏览 541 次2 个月之前

YouTubeChemistry Lovers Dr. Himali Hewage

Acid-Base Titration Using Phenolphthalein indicator #chemistry #shorts #youtubeshorts #youtubeshort

已浏览 384 次2023年6月21日

YouTubeDr.Mridula Chemistry Guru

A 0.210−g sample of an acid (molar mass =192 g/mol ) is titrate... | Filo

已浏览 5544 次7 个月之前

`40 mL 0.05 M` solution of sodium sesquicarbonate dehydrate `(Na_(2)CO_(3)

已浏览 35 次2020年8月23日

YouTubeDoubtnut

SOLVED:A 0.3012 g sample of an unknown monoprotic acid requires 24.13 mL of 0.0944 M NaOH for neutralization to a phenolphthalein end point. There are 0.32 mL of 0.0997 M HCl used for back-titration. a. How many moles of OH ^- are used? How many moles of H^ from HCl? - moles OH ^- - moles H^ b. How many moles of H^ are there in the solid acid? (Use Eq. 5.) -moles 𝐇^ in solid c. What is the molar mass of the unknown acid? (Use Eq. 4.) -g / mol

2020年5月4日

What volume (in mL) of 0.0500 M phospheric acid is needed to titrate completely 25.0 mL of 0.150 M

已浏览 619 次2020年4月19日

YouTubeDoubtnut

SOLVED:Following are three organic acids and the p Ka of each: butanoic acid, 4.82 ; barbituric acid, 5.00 ; and lactic acid, 3.85. (a) What is the Ka of each acid? (b) Which of the three is the strongest acid, and which is the weakest? (c) What information do you need to predict which of the three acids would require the most NaOH to reach a phenolphthalein end point?

2020年6月6日

SOLVED:A 0.527 -g sample of a mixture containing NaCO3, NaHCO3, and inert impurities is titrated with 0.109 M HCl, requiring 15.7 mL to reach the phenolphthalein end point and a total of 43.8 mL to reach the modified methyl orange end point. What is the percent each of Na2 CO3 and NaHCO3 in the mixture?

2021年1月16日

Using the incorrect indicator, acid base titration end point vs. equivalence point

已浏览 4802 次2015年8月25日

YouTubeScott Milam

SOLVED:A 3.00-L sample of urban air was bubbled through a solution containing 50.0 mL of 0.0116 M Ba(OH)2, which caused the CO2 in the sample to precipitate as BaCO3. The excess base was back-titrated to a phenolphthalein end point with 23.6 mL of 0.0108 M HCl. Calculate concentration of CO2 in the air in 1.98 g / L for the density of CO2.

1 gram of a sample of CaCO3 was strongly heated and the CO2 liberated was absorbed in 100 mL of 0.5 M NaOH solution. Assuming 90 % purity for the sample. How many mL of 0.5 M HCl would be required to react with the resulting solution to reach the end point in presence of phenolphthalein? (a) 73 mL (b) 41 mL (c) 82 mL (d) 100 mL A sampla-a | Numerade

2022年12月25日

SOLVED:Calculate the concentration of an acetic acid solution using the following data. Three 25.0 -mL samples of acetic acid were titrated to a phenolphthalein end point with 0.121 M NaOH. The volumes of NaOH were 19.96 mL, 19.73 mL, and 19.79 mL.

2020年6月5日

A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein end point with 25.0 …

YouTubeClaire Jones

SOLVED:A sodium hydroxide solution is standardized by titrating 0.8592 g of primary standard potassium acid phthalate to a phenolphthalein end point, requiring 32.67 mL. What is the molarity of the base solution?

2021年1月16日

Weak Acid Weak Alkali Titration: Why no indicator is suitable.

已浏览 4241 次2012年9月17日

YouTubeFranklyChemistry

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