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Consider the following general reaction (acetic acid + water in equilibrium with hydronium + acetate):
HC2H3O2 (aq) + H2O (l) ? H3O+ (aq) + C2H3O2- (aq) Kc = 1.8 x 10-5 (at 25 ºC)
If a solution initially contains (5.6x10^-1) M of HC2H3O2, (and no H3O+ or C2H3O2- ), what is the equilibrium concentration of H3O+ (aq) in the mixture?
The gas is collected over water . If 156 mL of gas is collected at 19oC and 769 mmHg total pressure, what is the mass of hydrogen collected?
A sample of H2O with a mass of 46.0 grams has a temperature of -58.0C. How many joules of energy are necessary to melt 46.0 grams of ice.
The product of this reaction contains two stereocenters. Due to the stereospecificity of the bromination and the symmetry of the product, however, only the meso-diastereomer of stilbene dibromide is produced.
Compute energy in joules released in formation of one mole of MgSe bonds. Radius of Mg ion is 1.60 A angstroms and radius of selenide ion is 1.26
When 0.800 g of Ca metal is added to 200-mL of 0.500 M HCl (aq), a temperature increase of 13.0 degrees Celsius is observed. What is the qreaction for the reaction of Ca(s) + 2H+(aq)?
A piece of metal of mass 18 g at 117?C is placed in a calorimeter containing 48.2 g of water at 21?C. The final temperature of the mixture is 85.4?C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surro..
A 0.1276-g sample of monprotic acid (Molar Mass = 1.10x 10^2) was dissolved in a 25.0 mL of water and titrated with .0633 M NaOH after 10. mL of base had been added, the pH was determined to be 5.67. What is the Ka for the acid
Standard Enthalpies of Formation: acetic and AB2 = - 25.65 kCal/ mole,A++ = -8.65 k Cal/ mole,Temperature = 10 Degree Celsius determine pK,
how many liters of the antifreeze ethylene glycol c2h6o2 would you add to a car radiator containing 6.50 l of water if
Question- An estimation of the laminar flame speed of an alkane, based on a simple energy balance, gives the correct order-of-magnitude of 10^0 m/s.
a mixture of 7.50 g he and 29.5 g ne has a pressure of 750. mm hg. what is the partial pressure of each of the
Describe why this is based on the wavelength range that is transmitted. What color would you see if you mixed the two solutions with ?max = 520 and ?max = 610?
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