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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.
Kn1 knowledge and understanding of acid and base reactions and pH, and of writing chemical formulas and equations and molar calculations.
The minimum daily requirement for vitamin C is 60 mg per day. What percentage of this requirement is in one cup (200 mL) of fresh and week-old orange juice?
How many coulombs would be required to electroplate 35.0 grams of chromium by passing an electrical current through a solution containing CrCl3?
You have 500.0 mL of a buffer solution containing 0.20 M acetic acid (CH3COOH) and 0.30 M sodium acetate (CH3COONa).
Estimate the useful range for each indicator, from a minimum to maximum pH. The range usually spans 1.5 to 2 pH units.
Explain why it is not necessary to know the exact concentration of bromothymol blue in the solution.
The fertilizer ammonium sulfate [(NH4)2SO4] is prepared by the reaction between ammonia (NH3) and sulfuric acid:
What can you conclude about the acidity of exhaled breath. Propose a hypothesis to explain the acidity of exhale breath.
Draw the cell, clearly mark all the components, and show the anode and the cathode, and the direction of the flow of electrons.
It has a Ka equal to 6.3 x10-6. Its un-ionized form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.8?
State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select one acid
What is the pH of a solution that is 3.0×10−9 M in NaOH? Would I do the log (3.0 x 10-9) and then subtract that number from 14 in order to get the pH?
Write on types of reactions. Precipitation, acid-base, and oxidation-reduction reactions. Find and discuss and example of each reaction type .
In an experiment to test how well methyl alcohol works as an antifreeze, a technician collected a sample of 175.0 mL of this liquid.
Under constant-pressure conditions a sample of hydrogen gas initially at 88 degrees C and 9.6 L is cooled until its final volume is 3.4 L.
Describe the changes in clarity and viscosity of a nuclear suspension that occurs upon the addition of Sodium Dodecyl Sulfate (SDS)?
First do rough titration by adding KMnO4 2mL at a time in order to quickly find range in which endpoint is reached.
Aluminum metal reacts with bromine gas to produce aluminum bromide.
Which one is a weak monoprotic acid: benzoic acid, perchloric acid, oxalic acid ,sulfurous acid?