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Problem- A 34.00mL sample of an unknown H3PO4 solution is titrated with a 0.120M NaOH solution. The equivalence point is reached when 27.28mL of NaOH solution is added. 1) What is the concentration of the unknown H3PO4 solution? The neutralization reaction is.
H3PO4(aq)+3NaOH(aq)?3H2O(l)+Na3PO4(aq)
Provide your answer in scientific notation
If you started a reaction with 2.00mmol of cyclopentanone (0.18ml) and 8.00mmol of benzaldehyde (0.81ml) what is the theoretical of the final product dibenzalcyclopentanone
Write and ionic equation to show what happens when we add small quantities of H+ ions to a buffer solution that contains equimolar amounts
After the reaction has reached equilibrium, the absorbance of the product C is measured and its concentration is determined to be 0.00745 M. Calculate the equilibrium constant for this reaction.
Define a container of Volume 2.60L contains gas at 250 mm Hg pressure at 298K. An additional 0.063 mole of another gas is added. Explain what will the pressure become
If 10.6 ml of (±)-a-phenylethylamine (MM=121.2 d=.94) are reacted with .083moles of (+)-tartaric acid then- a) How many grams of solid NaOH (MM=40.0) are needed to convert the(-)-amine diastereomeric salt into its free amine
which of the following will be more soluble in acidic solution than in pure water?
An element has ccp packing with a face-centered cubic unit cell. Its density is 11.4 g/mL and the unit cell volume is 1.21 x 10-25 L. Calculate the molar mass (g/mol) of the element to three significant figures.
If [a = 2.84 (+/-) 0.02], [b = 5.02 (+/-) 0.04], [c = 21.71 (+/-) 0.06], and [d = 9.49 (+/-) 0.04], calculate the absolute uncertainty in y if y = (a+b)/(c-d).
The earth uses 15 tettrawatts of power Sunlight striking the earth provides 1.336kw per square meter. The surface area of the earth is 197,000,000 square miles.
Gaseous C2H4 reacts with O2 according to the following equation: C2H4(g) +3O2(g) --> 2CO2(g) + 2H2O(g). What volume of oxygen at STP is needed to react with 1.50 mol of C2H4
For the following redox reaction, determine the oxidation states of all of the elements in the products and reactants. Which reactant is reduced and which is oxidized. Also, determine the reducing and oxidizing agents. Mg(s) + 2HCl(aq) ? MgCl2(aq)..
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) 2HI(g) Kc=53.3 At this temperature, 0.800 mol of H2 and 0.800 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present ..
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