The amount (in grams) of formic acid present in 100 mL of the given formic acid solution has to be calculated. Concept Information: Acid ionization constant K a : Acids ionize in water. Strong acids ionize completely whereas weak acids ionize to some limited extent. The degree to which a weak acid ionizes depends on the concentration of the acid and the equilibrium constant for the ionization. The ionization of a weak acid HA can be given as follows, HA ( a q ) ⇄ H + ( a q ) + A - ( a q ) The equilibrium expression for the above reaction is given below. K a = [ H + ][A - ] [ HA] Where K a is acid ionization constant, [ H + ] is concentration of hydrogen ion [ A - ] is concentration of acid anion [ HA] is concentration of the acid pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H + ] Molar mass: Molar mass is defined as mass of the chemical compound or chemical element divided by its amount. Molar mass= mass of the substance in grams moles To Calculate: The amount (in grams) of formic acid present in 100 mL of the given formic acid solution
The amount (in grams) of formic acid present in 100 mL of the given formic acid solution has to be calculated. Concept Information: Acid ionization constant K a : Acids ionize in water. Strong acids ionize completely whereas weak acids ionize to some limited extent. The degree to which a weak acid ionizes depends on the concentration of the acid and the equilibrium constant for the ionization. The ionization of a weak acid HA can be given as follows, HA ( a q ) ⇄ H + ( a q ) + A - ( a q ) The equilibrium expression for the above reaction is given below. K a = [ H + ][A - ] [ HA] Where K a is acid ionization constant, [ H + ] is concentration of hydrogen ion [ A - ] is concentration of acid anion [ HA] is concentration of the acid pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H + ] Molar mass: Molar mass is defined as mass of the chemical compound or chemical element divided by its amount. Molar mass= mass of the substance in grams moles To Calculate: The amount (in grams) of formic acid present in 100 mL of the given formic acid solution
Solution Summary: The author explains that the amount of formic acid present in 100 mL of a given solution has to be calculated. The concentration of hydrogen ion is measured using pH scale.
1) Calculate the longest and shortest wavelengths in the Lyman and Paschen series.
2) Calculate the ionization energy of He* and L2+ ions in their ground states.
3) Calculate the kinetic energy of the electron emitted upon irradiation of a H-atom in ground state by a 50-nm radiation.
Calculate the ionization energy of He+ and Li²+ ions in their ground states.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell