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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added.
There are two different schemes you could use to synthesize 4-ethyl-3-heptanol using a Grignard reagent and a carbonyl-containing compound
A solution is made by dissolving 25.6 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.
which produce no significant response to interfering ions. It is then used to measure the pH of 0.0100 M NaOH in 0.50 M NaCl at 25 degrees C. What is the observed pH under these conditions if the true pH is 1.13?
What is the value of K_sp for tin(II) sulfide, given that its solubility
A sample of Chlorine gas occupies a colume of 711 mL at pressure of 251 mmHg. Calculate the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 173 mL in scientific notation
From the same container under the same conditions--same temperature and initial pressure, it takes 40 s for 1.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
If Amberlyst 21 has a concentration of active site of 1.25 eq/L and we want to use 100 mL of a solution, how much Amberlyst 21 should we use
What volume of glacial acetic acid (d= 1.06g/ml) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2M acetate buffer
What is the volume percent of a solution prepared by dissolving 34 g of NaOH in enough water to make a final volume of 120 mL? Show your work. part b: How many mL of a 10% solution can be made from the solution in part a
If a solution of sodium chloride contains 5.2 NaCl in 900 grams of water. What is the concentration of the solution in parts per million?
A jogger runs at an average speed of 5.9 mi/h. a. How fast is she running in m/s? b. How many kilometers does she run in 98 min?
oxalic acid dihydrate (H2 C2 04). 2H20 (formula weight = 126 g/mol) is sometimes used to standardize NaOH solutions. How many grams of this acid will be required to titrate 45.0 mL of 0.18 M NaOH solution
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