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Titrating 75.0mL of a 3.21 M pyridine, C5H5N solution with a 2.63 M hydrochloric acid solution. A) What is the pH of the pyridine solution before you begin titrating? B) What is the pH after 75.0mL of the hydrochloric acid solution has been added? C) What volume of the hydrochloric acid is needed to reach the equivalence point? D) What is the pH at the equivalence point? E) Suggest a good indicator to use for this titration. Explain why. F) What is the pH after 125.0mL of hydrochloric acid has been added?
CaCN2 + 3H2O -> CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
What mass of H2O is required to form 1.3L of O2 at a temperature of 320K and a pressure of 0.957atm.
Why are the crude ester mixtures washed with aqueous NaHCO3?2. You wish to test 9 esters for antitumor activity. One and only one of the 9 esters will actually have antitumor activity. You will prepare the esters from an alcohol and an acid as was..
particular sample of pure iron requires 0.595 kJ of energy to raise its temperature from 25oC to 45oC. The specific heat of iron is 0.45 J/g oC. What must be the mass of the sample?
what is the molar mass of the unknown liquid in g/mole?
A 270- mL flask contains pure helium at a pressure of 749 torr. A second flask with a volume of 470 mL contains pure argon at a pressure of 730 torr what is the partial pressure of He?
How much heat is evolved in converting 1.00 mol of steam at 130.0 C to ice at -50.0 C? The heat capacity of steam is 2.01 J/g*C and of ice is 2.09 J/g*C.
You have been provided with a 0.1M aqueous solution of glycine at pH 9.0. Calculate how much (in ml) of 5M NaOH solution that you must add to 1 L of this 0.1M glycine solution in order to bring its pH to exactly 9.80
Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a certain reaction: 2X -> Y + Z Y + L -> M + Z Part A What is the overall reaction
Write equations for the reaction of each of the following with (1) Mg in ether followed by (2) additione of D2O to the resulting solution:
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) ->2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
ideal gas in 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperature is reduced from 400 K to 200 K.
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