A 23.72 ml volume of an H 2A acid solution of unknown concentration with 2 drops of phenolphthalein required 13.58 ml of 0.133 M NaOH to reach the endpoint. What is the molar concentration of the acid solution?
The molarity of the H2A is 0.038M. It can be calculated as shown below.
A 23.72 ml volume of an H 2A acid solution of unknown concentration with 2 drops...
A 25.00 mL volume of an HA acid solution of unknown concentration with 2 drops of phenolphthalein requires 0.1320 M NaOH was put in buret to reach the endpoint in the titration. The initial reading & fina reading of NaOH is shown in the picture Initial 9.63 mL 24.16 ml Volume of HA acid (mL) Volume of NaOH (mL) Molar concentration of NaOH (molL) We were unable to transcribe this image
you titrated an unknown acid with 0.0925 M NaOH, 0.6201g of the unknown acid was placed into an Erlenmeyer flask with10 ml of water and 2-3 drops of phenolphthalein. It took 32.34ml of NaOH to reach the endpoint. What is the pKa of the unknown acid? pH at endpoint is 7.19.
To determine the concentration of a solution of hydrochloric acid, a 75.00-mL sample is placed in a flask and titrated with a 0.1312 M solution of sodium hydroxide. A volume of 43.33 mL is required to reach the phenolphthalein endpoint. Calculate the concentration of hydrochloric acid in the original sample
you titrated an unknown acid with 0.0925 M NaOH, 0.6201g of the unknown acid was placed into an Erlenmeyer flask with10 ml of water and 2-3 drops of phenolphthalein. It took 32.34ml of NaOH to reach the endpoint. What is the molecular weight and the pKa of the unknown acid?
A 35.0 mL sample of HCl solution is placed in a flask, with a few drops of phenolphthalein indicator. Of 45.9 mL of a 0.200 M solution is required to reach the endpoint, what was the concentration of the HCl solution
50.00 mL of unknown calcium hydroxide solution is titrated with 0.300 M standard nitric acid solution. If 42.21 mL of the standard acid so lution is required to reach a phenolphthalein endpoint, what is the molarity of the unknown calcium hydroxide solution? (Hint: write the balanced formula unit equation.)
30.00 mL of a H2SO4 Solution with an unknown concentration was titrated to a phenolphthalein endpoint with 45.43 mL of a 0.1231M NaOH solution.What is the concentration of the H2SO4 solution?
A 5.30 mL sample of an H3PO4 solution of unknown concentration is titrated with a 1.100×10-2 M NaOH solution. A volume of 7.32 mL of the NaOH solution was required to reach the equivalence point. What is the concentration of the unknown H3PO4 solution? Express your answer with the appropriate units.
5-10 molar concentration of NaOH solution is 0. 128 B. Molar Concentration of an Acid Solution Acid type HA HA HA Unknown No. Balanced equation for beutralization of acid with NaOH. 25.0 25.0 25.0 1. Volume of acid solution (m) 2 Buret reading of NaOH, initial (L.) 3. Buret reading of NaOH,final (mL) 4. Volume of NaOH dispensed (m) 5. Molar concentration of NaOH (MOVL). Part A 6. Moles of NaOH dispensed (mol) 7. Molar concentration of acid solution (mol/L)...
A vinegar (acetic acid) solution of unknown concentration was titrated to the light pink endpoint with the standardized NaOH solution. The weight volume % of the vinegar solution were calculated. Molecular formula of Acetic acid: C2H4O2 Volume of vinegar sample titrated (ml) 5.00 Volume of NaOH required to neutralize vinegar in (mL) 8.74 Concentration of NaOH in mol/L, 0.1979 Calculate the weight/volume percentage of the vinegar solution (g/100 ml).