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Utilize the systematic treatment of equilibrium to find out the pH and concentrations of species in 1.00 L of solution containing 0.065 mol citric acid (H3A), 0.025 mol 8-hydroxyquinoline (HB) and 0.040 mol KOH. Consider merely acid-base chemistry. Ignore ion pairing as well as activity coefficients. Citric acid (H3A) is a triprotic acid with pKH3A = 3.128, pKH2A- = 4.761 as well as pKHA2- = 6.396. 8-Hydroxyquinoline (HB) is derived from the diprotic acid H2B with pKH2B = 4.94 and pKHB = 9.82.
Explain why recrystallization, as a general technique, is usually effective at removing a few percent of impurity, even though the solubility (g/mL) of the impurity might be similar to that of the main component.
A mass of gaseous water is given at a certain temperatur and a mass of liquid water is given at another temperature and it wants to know the final temperature of the system and the heat capacity is constant
someone investigating the properties of solutions containing carbonate ions prepared a solution containing 5.639g
Draw all the resonance structures for the N2O4 molecule. The skeletal structure of the molecule is
The Strychnine (C21 H22 N2 O2), is a weak base having Kb= 1.8x10-6. Compute the pH of a saturated solution of strychnine (16mg/100ml).
Identify the acid and base on the left side of the following equations and identify their conjugate species on the right side
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
Application of ideal gas law - How high can you raise the temperature of the gas without bursting the vessel?
What would the theoretical yield in moles be and how would you calculate that? What would the theoretical yield in grams be and how would you calculate that?
Window glass is typically made by mixing soda ash (Na2CO3), limestone (CaCO3), and silica sand (SiO2) and then heating to 1500 degrees Celcius to drive off Co2 from the Na2CO3 and CaCO3
Explain how molecular spectroscopy can be used for either the measurement or identification of a molecule.
the freezing point of the solution is lowered by 5.71 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of menthol.
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