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A solution at pH 7 contains a weak acid, HA. The pKa of the acid is 6.5. What is the ratio of [A-]:[HA]? (Note: The negative next to the A should be in superscript and the a in pKa should be in subscript)
Benzene, C6H6, is reacted with bromine, Br2, to produce bromobenzene, C6H5Br, and hydrogen bromide, HBr, as shown below. When 40.0 g of benzene are reacted with 95.0 g of bromine, 65.0 g of bromobenzene is produced.
A compound has a pKa of 7.4. To 100 mL of a 1.0M solution of this compound at pH 8 is added 30 mL of 1.0M HCl. what is the pH of the resulting solution?
An optically activated alkyne A(C10H14)can be catalytically hydrogenated to butylcyclohexane. Treatment of A with C2H5MgBr liberates no gas.
For a certain reaction delta H = -76.0 kJ and delta S= -234 J/K, if n=3 calculate E(standard) for the reaction at 25 degrees celsius
Suppose HI at 5.00 10^-1 M, H2 at 1.00 x 10^-2 M, and I2 at 5.00 x 10^-3 M are mixed in a 5.0 L container. Calculate all concentrations at equilibruim.
Draw a Lewis structure for H3C-NO2. Both oxygen atoms are directly attached to the nitrogen atom. If you take formal charge considerations into account, how many -bonds are in the molecule?
Mechanism for bromobenzene + magnesium turnings + annhydrous diethyl ether + methyl benzoate + H2SO4 --> triphenylmethanol
If He(g) has an average kinetic energy of 4610 J/mol under certain conditions, what is the root mean square speed
Evaluate the electronic configuration for ionization energies of Magnesium, the orbital number in which the electrons are added in phosphorus ion, and the one will lose in the ionization of Alluminium.
A blank titration of 10mL of similar solution containing no oxalic acid required 0.04mL to exhibit dectectable color. Find the concentration of oxalic acid in the unknown
a current of 2.40 a is passed through a solution containing cu2aq for 30.0 minutes with copper metal being deposited at
Write the balanced equation for the neutralization reaction between HI and Ba(OH)2 in aqueous solution. Include physical states.
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