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1. If you wish a buffer to have a pH of 10.00, what is the desired [H3O+]?
2. In the buffer from 6, you want to select a weak acid (one of the conjugate pair) with a Ka close to that value of [H3O+]. Explain why, using the expression for Ka.
Every Ka is for a reaction HA (aq) + H2O (l) ↔ H3O+ (aq) + A? (aq).
a) Write the chemical equilibrium for the acid H2CO3 for which the equilibrium constant is the Ka of carbonic acid.
b) Write the expression for the Ka for the reaction of carbonic acid with water.
c) If the patient's pH is 7.30, calculate [H3O+]
How many mL of a 0.175M solution of NaOH (aq) will react with 150.0 mL of a 0.158 M H3PO4 (aq) solution?
how does nitrobenzoic acid form as a by-product during the nitration of methyl benzoate and how is it removed?
A 20.00 mL sample of the standard KHP (KHC8H4O4) solution requires 24.16 mL of your base to reach the end point. Write the equation for the reaction.
What would happen to the calcium ion concentration in a saturated solution of Ca(OH)2 if the hydroxide ion concentration is increased by dissolving solid NaOH. What is the name of this effect
Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2(g) 2 OF2(g) What is the value of K if the following concentrations are found at equilibrium: [O2] = 0.200 mol/L, [F2] = 0.0100 mol/L, and [OF2] = 0.0633 mol/L.
in 2 solutions of equal volume and mass but with solutes of different identities we learned that the solution that has
How many moles of a reducing agent are used in a reaction containing 1.5L of this material which possesses a density of 0.8 and a molecular weight of 56
The atomic mass of Gallium is 69.72 amu which has two isotopes, Ga-69 (atomic mass= 68.92 amu) and Ga-71(atomic mass= 70.92 amu). What's the precent abundance of Ga-71 Isotope
A solution contains 0.040 mole of Ba(OH)2 completely dissolved in water to give 400 mL of solution. What is the ion concentration for this solution.
Write a hybridization and bonding scheme for each ion. Sketch the structure, including overlapping orbitals, and label all bonds. PF6-
What alkene product or products are produced by dehydration of the following alcohols? You must draw the structure of the reactant alcohol and the final product
It required 29.22 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
what is a an unknown liquid substance that is insoluable in water and soluable in cyclohexane and ethyl alcohol with a
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