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Obtain from your classmates, the molar enthalpies of neutralization of hydrochloric acid, sulfuric acid, and phosphoric acid when each reacts with sodium hydroxide. Write a chemical equation for each of these neutralization reaction.
A solution is made by mixing 49.0 mL of ethanol, C2H6O, and 51.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 degrees celcius
At what position will the electrophilic aromatic substitution occur for the following compounds? bromobenzene, nitrobenzene, benzoic acid, toluene, phenol, and benzaldehyde
An acid solution is 5.00% HCl by mass. Assuming that the density of the solution is 1.0 g/mL, find the molarity of the hydrogen ion in the solution. The molar mass of HCl is 36.5 g/mol
Use the standard enthalpies of formation given below to calculate the enthalpy change for following reaction at 298.15 K and 1 atm. Label each as endothermic or exothermic.
how does the ability of permanganate (VII) ( when being reduce to Mn2+) to oxidize aqueous chloride , bromide or iodide ions change?
If 15.0 mL of glacial acetic acid (pure HC2H3O2) is diluted to 1.70 L with water, what is the pH of the resulting solution? The density of glacial acetic acid is 1.05 g/mL
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air. (a) If the partial pressures of CO2 and H2O in exhaled air ar..
what is the pH after the addition of 2.7*10-2 moles of KOH to 3.6*10-2 moles HCl if the resulting solution volume is 150mL
when 6.6 g solid naoh is dissolved in 30.0 g of water in a coffee cup calorimeter the temperature rises from 25.5 to
HEPES are synthetic amine compounds that are often used to make buffers for biochemical studies. What is the pH of a 1.0 L buffer solution that is 0.250M HEPES
A 499 mL sample of solution contains 32.0 g of CaCl2 Calculate the molar concentration of Cl - in this solution
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