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A sample of 0.1687 g of an unknown monoprotic acid was dissolved in 25.0mL of water and titrated with 0.1150 M NaOH. The acid required 15.5mL of base to reach the equivalence point. (a) Explain what is the molecular weight of the acid? (b) After 7.25mL of base had been added in the titration, the pH was found to be 2.85. Explain what is the Ka for the unknown acid?
The Eo values for the following two half-reactions are listed in an ancient standard reduction potential table as, respectively, 0.907 and 0.972 volts.
assume you dissolve 2.56g of malic acid c4h605 in half a liter of water 500g. calculate the molarity molality mole
What is the total work (in joules) in going from the initial to the final state by way of the preceding two steps? What would be the total work if the process were carried out reversibly?
A solution of ammonia and water contains 4.70×10^25 water molecules and 7.80×10^24 ammonia molecules. How many total hydrogen atoms are in this solution
How many moles of gas are present after the reaction has come to completion. What is the mol fraction of Ar after the reaction has come to completion
What is partial pressure of O2 in atmospheres? What is the partial pressure of Ne in atmospheres?
From there, how would I find the moles of salicylic acid in aspirin sample (mol) and the mass of salicylic acid in aspirin sample (g), which should help me calculate the percent purity of aspirin and the percent yield of aspirin in sample. Thank y..
How many kilograms of a fertilizer made of pure P2O5 would be required to supply 1.86 kilogram of phosphorus to the soil
To learn how to calculate the solubility from Ksp and vice versa. Consider the following equilibrium between a solid salt and its dissolved form (ions) in a saturated solution:
The reaction below reaches equilibrium in a closed reaction vessel. The enthalpy change for the forward reaction is +135 kJ/mol. Does the mass of Na 2 CO 3 increase, decrease or stay the same if the mixture is transferred to a smaller reaction ves..
what minimum requirement is needed to obtain reproducible results with a single beam spectrophotometer
Describe the computational procedures that lead to the determination of the rate constants ka and kb from measurements of tau for different values of [A]tot
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