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A solution of butanoic acid is prepared from 0.067 mol of butanoic acid in sufficient water to give 1.0 L of solution and has a pH of 2.72. Determine the Ka for the butanoic acid solution. a) 5.42 x 10^-5 b) 9.0 x 10^-5 c) 7.2 x 10^-5 d) 6.7 x 10^-6 The answer is 5.42 x 10^-5
What is the concentration of in mass percent? An aqueous solution has a vapor pressure of 81.9 at 50 . The vapor pressure of pure water at this temperature is 92.6.
Draw the organic product(s) of the reaction of p-methylbenzoic acid with aqueous sodium hydroxide
A 275-g sample of nickel at 100.0C is placed in 100.0 mL of water at 22.0C. What is the final temperature of the water.
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
Draw the Newman projection of all staggered and eclipsed conformations around the C3-C4 bond of hexane (CH3CH2CH2CH2CH2CH3).
According to the following reaction, what amount of Al2S3 remains when 20.00 g of Al2S3 and 2.00 g of H2O are reacted? A few of the molar masses are as follows: Al2S3 = 150.17 g/mol, H2O = 18.02 g/mol.
Draw the alkyne formed when 3,4-dichloroheptane is treated with an excess of strong base such as sodium amide
Identify the most stable arrangement of the regions of high electron density. Diagram and name the type of structure that the molecules has based on positions of the atoms.
.Alkenes can have cis-trans isomerism. b.Alkenes are chemically reactive at the double bond. c.Alkenes are nonpolar compounds. d.Alkenes are less dense than water
To determine the concentration of X in an unknown solution, 1.00 mL of 8.01 mM S was added to 4.00 mL of the unknown X solution and the mixture was diluted to 10.0 mL
How many moles of monobasic sodium phosphate (NaH2PO4) and dibasic sodium phosphate (Na2HPO4) must be added to water to prepare 0.875 L buffer solution that is 0.50 M phosphate with a pH = 7.1
If 1.0 atm H2S (g) are added to a 1.0 L flask containing an excess of I2 (s), what will be the equilibrium pressure of HI?
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