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Question- Calculate the pH for each of the following cases in the titration of 25.0ml of 0.160M pyridine C5H5N(aq) with 0.160M HBr(aq):
1) Before addition of any HBr?
2) After addition of 12.5 ml of HBr?
3) After addition of 16.0 ml of HBr?
4) After addition of 25.0 ml of HBr?
5) After addition of 32.0 ml of HBr?
Give reasons or calculations to sustain your answer.
conversion of 0.95g of liquid water to steam at 100 clesius requires 2.1 kJ of heat. calculate the molar enthalpy of evaporation of water at 100 celsius
Calculate DE, and determine whether the process is endothermic or exothermic for the following cases: A system releases 29 kJ of heat to the surroundings and does 226 kJ of work on the surroundings.
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
A 2.0 L glass soda bottle filled only with air is tightly capped at 18°C and 686 mmHg. If the bottle is placed in water at 95°C, what is the pressure in the bottle
Calculate the molarity of a sodium chloride brine solution that exhibits a density of 1.13 g/mL and a mass percent of 17.7% at room temp.
Determine the root-mean-square speed of CO2 molecules that have an average kinetic energy of 4.21*10^(-21) J per molecule.
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The vapor pressure of water at 45.0 degrees celcius is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.50m K2CO3 at this temperature (assume 100% dissociation)
Which is the best solvent for recrystallizing acetanilide, water or dichloromethane (CH2Cl2). Explain your answer to receive lifesaver rating.
A volume of 1.86 L of H2 is trapped in a nuclear reactor at 870oC and 125 atm. What is the partial pressure (torr) of the H2 after it is released into a container vessel of 2.8 x 104 m3 at 25oC
Demonstrate that L^2and Lzcommute withanyHamiltonian (for a single particle) for which the potential energy is spherically symmetric
Identify the statements that accurately explain how hydrogen ion concentration relates to energy production in oxidative phosphorylation.
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