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Problem- If the Ka of a monoprotic weak acid is 7.2 x 10^-6, what is the pH of a 0.20 M solution of this acid?
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Write a balancing equation for the reaction of potassium crbonate plus lead(11) nitrate where the products are lead (11) carbonate and patassium nitrate
A reaction mixture consists of 0.50 atm nitrogen, 0.75 atm hydrogen and 2.0 atm ammonia. Go for the reaction is -33.32 kJ/mol. Calculate the G at 298 K for the reaction between nitrogen and hydrogen to form ammonia, N2 + 3 H2 --> 2 NH3
What is the atomic mass of unknown element X if it has the following isotopic composition.
Thiosulfate was used to mask the copper in a 20.00 mL aliquot. Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution.
the equivalence point occurs when 12.75 mL of 0.075M NaOH is added to a solution containing 10mL weak unknown acid and 40mL Deionized water
Aqueous solutions of nickel(II) sulfate and mercury(I) nitrate react to give aqueous nickel(II) nitrate and a mercury(I) sulfate precipitate
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1;
The acid HCl is also there with the nucleophile to form the keto-enol tautomerization. An oxonium ion should form. What does the oxonium ion look like. What are the two products. Is this reaction an Sn1 or an SN2 reaction. Explain.
Why is it not possible to use acetic acid rather than formic acid in the Eischwieler-Clarke reaction
If 4.168 kJ of heat is realsed be a reaction inside a calorimeter containing 75.40 g of water, the temperature of the water as well as the calorimeter increases from 24.58C to 35.82C. Compute the heat capacity of the calorimeter (in J/C). The spec..
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
a molecule has an excited state electronic energy level that emits radiation of 1lambda 360 cm-1 when it falls to the
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