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In the following buffer system, what happens to the concentration of the highlighted molecule if you add base in the form of OH-?
HF + NaF + H2O F- + H3O+ + Na+
Increases
Decreases
Stays about the same
Buffers do not change.
None of these
Which of the following is an example of an ionic crystalline solid? Choose one answer. a. calcite, CaCO3 b. fluorite, CaF2 c. iron pyrite, FeS2 d. silver chloride, AgCl e. all of these
Imagine you are working on ways to improve the process by which iron ore containing Fe2O3 is converted into iron: Fe2O3(s) + 3 CO(g) 2 Fe(s) + 3 CO2(g)
What chemical test might be used to distinguidh between pentanal and 2-pentanone? Between benzyl alcohol
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution.
What is the equilibrium concentration of chloroacetic acid, HC2H2O2Cl, in a solution prepared by dissolving 0.0277 mol of HC2H2O2Cl in 1.00 L of water
Suppose 1.07 g of FeCl3 is placed in a 75.0 mL volumetric flask, water is added, the mixture is shaken to dissolve the solid, and then water is added to the calibration mark of the flask. Calculate the molarity of each ion present in the solution.
If I took 5mg of salicylic acid and added it to a 500mL volumetric flask and bringing it up to volume with a 0.1M NaOH solution what would be the concentration of this?
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s
Given that B(SiO) 640 kJ/mol, show that bond enthalpy considerations predict that silicon-oxygen compounds are likely to contain networks
in a reaction between pure acetic acid and sodium bicarbonate 26.6 grams of sodium bicarbonate was added to 12.0 ml of
Lactic acid has one acidic hydrogen atom in its structure. A 0.10 M solution of lactic acid has a pH of 2.44. Calculate the Ka of lactic acid.
Write the half-reactions and the products for the reactions that occur in the electrolysis of a saturated solution of magnesium sulfate using inert electrodes.
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