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Calculate the expected pH of a 50 mL solution o 0.150 M acetic acid that is being titrated with a 0.2 M solution of NaOH at any point in the region II of the titration. Region II = Until just before the equivalence point. Ka of Ch3COOH = 1.8*10^-5. Choose any appropriate volume of 0.2 M NaOH to use.
Draw resonanc contributors for the following species. Indicate which are major contributors and which are minor contributors to the resonance hybrid:
phenol (respectively pKa 4.75 and 9.95), What is the principle species present at pH values 3, 5, 7, and 11?
What volume of oxygen is needed to react with solid sulfur to form 6.20 L of sulfur dioxide?
Calculate the potential volume of the gas contained in 500-mL aerosol can when it is heated from 25 degrees C to 54 degrees C (approx. 130 degrees F) assuming a constant pressure.
what amount of heat would need to be added to 5.0 x 103 g of water to change its temperature from 21c to 84c?
Which of the following states are Ture of the final temperature of a system where equal masses of Aluminum( Cal=0.900 J/g Celsius, Ti=75 Celsius and water (ch2o=4.284j/gcel, Ti=25 cel) are placed in contact? assume no energy losses to the surround..
The amount of I3-(aq) in a solution can be detrmined by titration with a solution containing a known concentration of S2O32-(aq)( thiosulfate ion). The determination is based on the net ionic equation.
The results below are from a titration lab utilizing 25mL of .1M acetic acid which was titrated with the NaOH solution of volume and molarity shown below. Please show how to get the correct pH at equivalence to compare with indicator change
A common by-product in this reaction is biphenyl, which is generated through a coupling reaction of phenylmagnesium bromide with unreacted bromobenzene. Draw the structure of biphenyl.
30 mL of 0.25 M acetic acid are titrated with 0.05 M KOH. What is the volume of KOH needed to reach the equivalence point. A. 0.15 mL B. 150 L C. 150 mL D. 1.5 L
The thermogram for the reaction is depicted below. The calorimeter constant is 28.1 J/ Celcius. Both solutions were initially at 21.31 Celcius. Calculate Delta Hrxn for the reaction.
for ammonia, Kb is 1.8*10^-5, to make a buffered solution with pH of 10.0, the ratio of [NH4+] to [NH3] must be
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