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Problem- Determine the pH change when 0.072 mol HNO3 is added to 1.00 L of a buffer solution that is 0.328 M in CH3COOH and 0.286 M in CH3COO-.
pH after addition ? pH before addition = pH change = ?
I am confused and not getting correct answer, please help me
What ions will the following elements form? Enter the letter of the item in Column Two that best matches the item in Column One.
There is a mixture that is soluble only in methylene chloride. I wanna run the column in 10% Ethyl acetate/hexanes. Which method of column loading should I use in this case and why?
what type of intermolecular forces are expected in a nicl2
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added Va= 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL
CH3CH2CH2CN can be synthesized by an SN2 reaction. Draw the structures of the alkyl chloride and nucleophile that will give this compound in highest yield.
What happens when an inert gas is added to an equilibrium state with out change in pressure. why
An understanding of Le Chatelier's principle is fundemental to the study of chemistry and helps us to understand everyday situations.
The standard free energy change associated with the dissolution of ammonium nitrate in water is -6.73 kJ/mol at 298.15 K. NH4NO3(s)->NH4NO3(aq) What is the equilibrium constant for the reaction. (R=8.314 J/K*mol)
how many moles of hno3 are present in 34.8 ml of a 2.20 m solution of nitric
A 7.50 piece of iron at 100*C is dropped into 25.0g of water at 22.0*C. Assuming that the heat lost equals heat gained, determine the final temperature of the iron/water system. Assume a heat capacity of water of 4.18J/gK and of iron of 0.45J/gK.
A 2.00-g sample of a large biomolecule was dissolved in 19.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
At beginning of the work up stage of the lab procedure, the two phase reaction mixture probably contains the following:
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