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Problem- A buffer solution is prepared by dissolving 3.5 mol of HCN (Ka = 4.0 x 10-10) and 2.71 mol of KCN in enough water to make 0.5 L of solution. What is the pH of this solution? Answer to 3 significant figures.
I need expert help to solve the above question. Show each and every step.
If 0.20g of gas occupies 400 mL at 30 degrees celsius and 700 mm Hg of pressure, what is the molar mass of the gas?
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
Write equations to show how you would synthesize salicylic acid
Explain how many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water
a 9.780 g. gaseous mixture contains ethane c2h6 and propane c3h8. complete combustion to form carbon dioxide and water
The freezing point of a solution of acetic acid and water is -0.278C. What is the molality of the solution
An intermediate in a chemical reaction is a species that the reactant molecules interact with during an early step in a reaction that is regenerated
What is the ph change of a 0.300 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.130 M with no change in volume
25.0 ml of 0.212 M NaOH ia neutralized by 13.6 ml of an HCl solution. The molarity of the NAOH solution is?
A chromium-containing compound has the formula Fe(x)Cr(y)O4 and is 28.59% oxygen by mass. Find x and y.
what are the boiling point and freezing point of a 1.47m solution of napthalene in benzene
draw the structures of two stereoisomeric alkenes that would give 3-hexanol as the only major product of hydroboration
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