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The carbocation electrophile in a Friedel-Crafts reaction can be generated in ways other than by reaction of an alkyl chloride with AlCl3. For instance, reaction of benzene with 2-methylpropene in the presence of H3PO4 yields tert-butylbenzene. Depict a structure for the electrophile.
The pressure of 9.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-half of the original. What is the final volume of the gas
A weak acid (HA) has a pKa of 4.015. If a solution of this acid has a pH of 4.443, explain what percentage of the acid is not ionized. Presume all H in solution came from the ionization of HA.
Sodium oxide reacts with water to produce sodium hydroxide. How many moles of sodium hydroxide can be produced from 6.20g of Sodium oxide?
Calculate the temperature change in the water upon the 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 275g of water.
Formic acid (HCO2H, Ka=1.8X10^-4) is the principal component in the venom of stinging ants. What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point
Write a balanced equation to show the polymerisation of the molecule CF2CF2. Show two repeat units of the polymer.
If water at the boiling point is saturated with potassium hydrogen tartate, 30 mL of the solution requires 49.5 mL of 0.2 M NaOH in a titration. What is the KSP of potassium hydrogen tartate at this temperature and what is the solubility in g/L.
If the 4.00g sample corresponds to 0.0666 moles of a compound, what is the molecular formula of the unknown molecule (CxHyOz)
The height of a cylindrical container is 29.51 cm and the diameter is 20.50 cm. How many gallons of water can this container hold. Solve by dimensional analysis
Calculate the pH of an aqueous solution prepared to contain 1.3 x 10^-3 M sodium nitrite (NaNO2) if the acid dissociation equilibrium constant, Ka, for nitrous acid (HNO2) is 5.1 x 10^-4.
Explain why the extrapolated temperature is used to determine the maximum temperature of the mixture rather than the highest record temperature in the experiment.
How much difluoroacetic acid (d = 1.526g/cm^3 MW = 96.033) should be transferred to a 500 mL volumetric flask that's half full of water to generate
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