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an acetic acid solution of 2.87 pH is titrated with 1.5 mL of bromocresol green. When the color changes to light green, the pH is 3.95. The final color of the solution is dark blue. Please help me to estimate the Ka for bromocresol green using these numbers.
When equilibrium is reached at 700C, the total pressure of the system is found to be 4.00 atm. If the equilibrium constant Kp for this reaction is equal to 1.52,
A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C? (ethylene glycol is nonvolatile.)
Calculate the heat required to convert 25.0 g of C2Cl3F3 from a liquid at 5.00 degress celsius to a gas at 82.00 degrees celsius.
what 2 substances undergo a physical change if the temperature is reduced from 50 degrees celcius to negative 50 degrees celcius. what is the physical change that takes place in each case.
Understanding of Chemistry basics - explain a situation that violates the second law of thermodynamics?
A sample of steam with a mass of 0.550grams and at a temperature of 100 degrees celcius condenses into an insulated container holding 4.30grams of water at 6.0 celcius
the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?
the reaction conditions are influencing the directing effect of the -NH2 group. Explain why this occurs, using both words and structures.
An aqueous solution of unoxygenated hemoglobin containing 5 g of protein (M= 64000 g/mol) in the 100cm3 of solution is placed in an insulated vessel.
a solution contains 55 grams of ascorbic acid in 250 g of water freezes at -2.34 degrees C. calculate the molar mass of the solute
A sample of N2O3 contains 1.26 moles of nitrogen. Use the following atomic masses: N =14, O=16.
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
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