Questions asked by Joe
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An aqueous solution containing 3,42 grams per 100 grams of water has a freezing point depression of 0,186deg c. What is the molecular mass of the solute?
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For the ion #"NH"_4^+# the conductance at infinite dilution and 50deg c is 115. The equivalent conductance of #"NH"_4"NO"_3# at 50deg c and infinite dilution is 219. What is the conductance of the ion #"NO"_3^-# at 50deg c and infinite dilution?
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What is the hydroxyl ion concentration of an acid solution for which [H+]=2,5x10-4?
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HA represent a strong acid; BOH represent weak base.
a) in which of the following ranges is the pH of a water solution of the Salt BA
* 0-7
* 7
* 7 -14
b) explain the answer?
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Will the addition of sodium acetate to an acetic acid solution change the pH of the solution? explain your answer.
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Calculate the pH of a #"0.2 M"# solution of #"NaC"_2"H"_3"O"_2# given that the hydrolysis constant is #K_h = 5.6xx10^(-10)#?
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What is the mole fraction of hydrogen in a gaseeous mixture that consist of 8.0g hydrogen and 12.0g neon in a 3.50L container maintained at 35.20 deg c?