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What is the of 1.00 of the buffer solution that contains 0.100M HF and 0.120M NaF after 0.020M of HNO3 is added? The Ka of HF is 3.5 x 10^-4, and pKa = 3.46.
How to write an equation for this problem?
A flask contains 0.390 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
What is the percent yield of a reaction in which 244 g phosphorus trichloride reacts with excess water to form 144 g HCl and aqueous phosphorus acid (H3PO3)?
The ph of 0.40 M HF(aq) is 1.93. Calculate the change in ph when 0.356 g of sodium fluoride is added to 50.0 ml of the solution .
Given the Ksp values for the following precipitates, please predict which precipitate has the largest solubility in the presence of 0.01 M of its composing anions (e.g., in the presence of 0.01 M Cl- ion for AgCl(s))
What is the pH of a 25.00 mL solution of 0.10 M CH3CO2H? What are the concentrations of OH- and CH3CO2? Ka = 1.8 x 10^-5
Write a brief procedure that would have been used to carry out the titration. Just include the key steps (terms and measurements). c. What was the average volume of Ca(OH)2 used? d. Calculate the concentration of the HCI sample.
What is the buffer component ratio, ([BrO-]/[HBrO]) of a bromate buffer that has a pH of 7.88. Ka of HBrO is 2.3 x 10-9
Calculate the theoretical ph of one of your buffer at 0^0 C. Assume that room temperature is 22^0 C. If none of your buffer is listed on the table of changing pka with temperature, do this problem for TRIS at ph 8.0.
When dealing with ICE tables and calculating Kb and such, how do you do the algebra to calculate x when x is NOT negligible?
sodium carbonate na2co3 is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be
Calculate the expected change in temperature for 1.7 g of NH4NO3 dissolved in 50.0 mL of H2O. Assume that the calorimeter absorbs no heat.
The half-life of U238 is 4.5X10^9 years. How many disintegrations occur in 1 minute for a 10 mg sample of this element
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