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A solution of hydrofuoric acid contains 2.0g of HF per litre and has a pH of 2.2. What is the dissociation constant for HF?
Glucose is soluble in benzene. If alpha-D-glucose is dissolved in benzene, essentially no alpha-D-glucose is formed.
The Ksp for Fe(OH)2 is 1.8 x 10-11. Will a precipitate form if an 0.4M solution of FeCl2, has its pH raised to 8.3?
This problem indicates that 1 gram of hydrated boric acid (H3BO3) is added to 1 liter of water at pH 7.0 and at standard temperature.
What metal will react with water at room temperature an one atmosphere pressure to produce hydrogen gas?
Extraction depends upon the relative solubilities of materials in different solvents. In this lab, a mixture containing a carboxylic acid.
Acetylsalicylic acid acid is the active ingredient in aspirin. It took 35.17 mL of 0.5065 M sodium hydroxide to react completely with 3.210 g.
In a standarisation of hydrochloric acid solution, 0.1232g of sodium carbonate were used.
20.0ml of a 1.011%w/v calcium lactate solution titrated against 18.34ml of 0.0503M disodium edetate solution.
What are the pKa values of Na2SO4 and CaSO4 ---- even though they are salts, would they continue to add at least in part to the acidity of the solution?
Tell the name of the following solutions after they are mixed and what their net ionic equations would be?
Under standard conditions , will the oxidation of lactate using Fe3+ as electron acceptor prove energetically favorable?
Determine the molar mass of an unknown acid. Called the unknown acid HX, and it reacts with NaOH.
How to identify the following unbalanced reactions equations as the following categories precipitation, acid-base or oxidation.
1000 g of zinc oxide is added to a 1 liter container of pH neutral water (pH 7.0); the solubility of the ZnO is given as .29 g/L.
The pH corresponding to each of the hydrogen ion concentration given below and indicate whether each solution is acidic or basic.
What is it that makes water such a good solvent for polar substances? Why is it called the universal solvent?
How many grams of naphthalene, C10H8, would you add to 49.5 g of benzene, C6H6 (l), to produce a solution that has the same freezing point as pure water?
What is the H3O+ concentration whent the pH is 7.2? When the pH is 7.2 is the equilibrium in question 1 shifted to the left or the right.
The conductivity of a 0.1 moldm^-3 solution of potassium chloride at298K was found to be 1.1639 x 10^-2 Scm^-1.
How do they measure the pH in each of these three processes? Do they use pH indicators or pH meters? What would be the reason for their choices?
How do your data exclude other possibilities and what, if anything is still inconsistent with your conclusion?
How would these changes affect the tendency for calcite or aragonite to dissolve or precipitate from seawater?
35.0 mL of 0.255 M nitric acid is added to 45.0 mL of 0.328 M Mg(NO3)2. What is the concentration of nitrate ion in the final solution?
You have two neutral solutions. One contains the indicator methyl red, which turns red in strongly acidic aqueous solutions but is otherwise yellow.