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Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.00*10^2 102 mL of solution and then titrate the solution with 0.148 M NaOH C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O() What are the concentrations of the following ions at the equivalence point? Na+, H3O+, OH- C6H5CO2- ____M Na+ ____M H3O+ ____ M OH- _____M C6H5CO2- What is the pH of the solution?
calculate what volume of each 0.50M solution should be mixed to give a total volume of 50.0mL AND the reactants in the correct stoichiometry. Also write a data table in the space given
Even with a drying tube, leaving phenylmagnesium bromide exposed to air will eventually lead to its decomposition. Why? What is the product of this decomposition pathway?
The following reaction was monitored by measuring the partial pressure of oxygen. The pressure was measured at 25 degrees Celsius.
Sucrose and glucose are nonvolatile. What is the mole fraction of water in this solution?
Automobile antifreeze is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL, MW= 62.07 g/mol) and water (d=1.00 g/L, MW= 18.02 g/mol). Assume that the volume are additivr, calculate concentrationin the following units:
Compare the polarity of hexane, dichloromethane, ethyl acetate, acetone, and methanol for tlc (thin layer chromatography)
If 93 of heat are added to a pure gold coin with a mass of 11 , what is its temperature change? Specific heat capacity of gold is 0.128?
Calculate molality and mass percent of alcohol in the mixture. A solution of ethanol, C2H5OH, in water has a concentration of 1.996 mol L-1. At 20.0 ºC its density is 0.9677 g mL-1
Water supply in a city is fluoridated by adding NaF. The preferred concentration of F- is 1.6ppm.calculate the amount of Naf in milligrams should be added per gallon (treated water) if the water supply is 0.2 ppm in F-?
Assume that an incorrectly adjusted lawn mower is operated in a garage such that the combustion reaction in the engine is:
Calculate Gibbs free energy and determine the type of thermodynamic reaction and what type of thermodynamic reaction is shown.
Determine the theoretical and percent yields of ethanol if 684 g sucrose undergoes fermentation and 349 g ethanol is obtained?
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