0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and it required 25.8 mL to reach end point. Answer must be in 4 decimal places.
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0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and it required 25.8 mL to reach end point. Answer must be in 4 decimal places.
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- 0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and it required 25.8 mL to reach end point.0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and it required 25.8 mL to reach end point. What is the molar concentration required?Pre Lab Questions: (Each answer is to be written as a complete sentence) What is the reason for washing the precipitate with water in Step 9? Define precipitate. Define filtrate. In Step 2, what is the purpose for rinsing the stirring rod? read the Procedure to answer the questions Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly…
- I was told by another expert that they could have only answered 3 bollet points each and to upload the rest This is me uploading the rest. Please do not reject it.You want to determine the concentration of NaCl in a water. In preliminary analysis, it appears to be saline water with a NaCl content of approximately 4%. Should you dilute the sample if your titrant has a concentration of 0.1 M and you want to spend 25 mL of sample?Calculate the volume in milliliters of 0.362 M KOH necessary to titrate 28.38 mL of 0.279 M diprotic sulfuric acid, H2SO4, to a phenolphthalein end-point. Report the answer to a precision of 2 decimal places.
- Volume of 0.200M K2C2O4 Is required to react completely with 30.0 ML of 0.100 M Fe (NO3)3 Choose one A. 15.0 ml B. 10.0 ml C. 30.0 ml D. 22.5 mlIn which situation(s) is it necessary to use a volumetric flask for maximum accuracy? to prepare a 0.150M solution of sodium chloride to measure ~25mL of water to prepare 0.1M HCI from 36-38% HCI a and c all of the above (Please type answer no write by hend)A lab technician is asked to prepare 100 ml of 5% working solution from a 25% stock sulfosalicylic acid. Calculate the volume needed. Then the technician is asked to clean out the chemical reagent storeroom and discard any reagents not used in the past 5 years. How should the tech proceed?
- Please answer as soon as possible. Thank you! A 10.000-g cocoa powder sample was dissolved in concentrated acid and then diluted to 100.00 mL using distilled water. The solution was found to contain 5.45 uM Fe. Calculate concentration of Fe (MM: 55.845) in the cocoa powder sample in parts-per-million (ppm) (weight by volume).Calculate [ I- ] given the following information: In a test tube, 2.0 mL 0.060 M KI solution 4.0 mL Distilled H2O 2.0 mL 2.0 mM Na2S2O3 solution 2.0 mL 0.040 M H2O2 solution Total solution volume: 10 mLA 1.458 g primary-standard grade Na2CO3 (MW = 105.99 g/mol) was used to standardize an HCl solution. Solve for the molarity of HCl if 24.81 mL of HCl was used to reach the endpoint.