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2g of ethylenediamine tetraacetic acid (EDTA) are dissolvedin sufficient water to make a total volume of 1 liter. (ForEDTA: Mr = 292, pKa1 = 1.7, pKa2 =2.6, pKa3 = 6.3, pKa4 = 10.6)
a) What is the H+ ion concentration in thesolution?
b) What percentage of the EDTA molecules are ionized?
c) What is the pH of the solution?
d) If the EDTA had been dissolved in 100ml of 2.5M NaOH andsufficient water is added to make 1L, what major ionization formsof EDTA would be present? What would be the pH of the solution?
A 4.867 g sample of a monoprotic acid was dissolved in water. It took 30.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
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Using the same sample of gas ( P1= 695 , T2 = 27 ), we wish to change the pressure to 6950 with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure
at 30oc the decomposition of hydrogen iodide into hydrogen and iodine is a second-order reaction. the rate constant for
The standard free energy of activation of one reaction A is 85.50 kJ mol-1 (20.43 kcal mol-1). The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1).
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Two containers are connected by an open tube. One container (A) is at 300K, the other (B) is at 600K. These two containers must have
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explain how to identify a molecular compound based on a: chemical formula and on a systematic name
from the length of the magnessium ribbon (4.6 cm) and the mass of a metal of magnessium (0.77 g/m) determine the mass of Mg that reacted.
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