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Problem- 10 mL of 1.8 M acetic acid (CH3COOH) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown.
(a) What is the approximate pKa? (which 4.8 is what I have and it appears correct)
(b) At the pKa, what fraction of the carboxyl group will have been converted to COO-?
Express your answer as a decimal, and not a percent.
State your response as a chemical formula.
Which of the following compounds will have the highest molar solubility in pure water. Answer A. PbSO4, Ksp = 1.82 × 10-8 B. MgCO3, Ksp = 6.82 × 10-6 C. AgI, Ksp = 8.51 × 10-17 D. PbS, Ksp = 9.04 × 10-29 E. FeS, Ksp = 3.72 × 10-19
Problem- What mass of sodium benzoate must be added to 3 L of 1.1 M C6H5COOH (aq) to makea buffer with pH=3? Answer in units of g.
Platinum exhibits an extremely intense emission line at 214.4 nm. Could the spectroscope that you used in this lab, also be used to observe this electromagnetic radiation. Explain.
Write the balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NaOH
Determine the mass, of: a.30.0 mL of the liquid propylene glycol, a moisturizing agent for foods,
Question- What is the minimum volume of a solution that contains 0.743g of NaBH4 per 100.0 mL of solution that is required to fully reduce 0.943g of 3-methyl-1-phenyl-2-butanone (C11H14O). You may assume the reaction works ideally.
The rate constant for a certain reaction is = 6.10×10?3 . If the initial reactant concentration was 0.750 , what will the concentration be after 18.0 minutes
Describe the glassware and the technique you would use to take part of a sample of a solution of concentration 1.00 and make it into a solution of concentration 0.250(i.e,make a solution exactly one quarter of the original concentration)
Window glass is typically made by mixing soda ash (Na2CO3), limestone (CaCO3), and silica sand (SiO2) and then heating to 1500 degrees Celcius to drive off Co2 from the Na2CO3 and CaCO3.
essential to prevent uncontrolled raise of the rate of chain reaction in the nuclear power plant. Can you try to find additional information how rate of chain reaction
When copper(II) sulfate pentahydrate is heated, it decomposes to the dehydrated form the waters of hydration are released from the solid crystal and form water vapor. The hydrated form is medium blue, and the dehydrated solid is light blue.
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases.
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