How Do You Calculate Moles of Gas and CO2 Concentration Using the Ideal Gas Law?

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The Ideal Gas Law can be utilized to calculate the number of moles of gas in a specific volume at given conditions, such as 1.00 atm and 298K. In a scenario involving 6.0 x 10^2 mL of a 1.0 x 10^-4 M NaOH solution with phenolphthalein, the reaction with CO2 can be analyzed to determine the concentration of CO2 in a person's breath. When 374 mL of breath is needed to change the indicator from pink to colorless, this data can be used to calculate the moles of CO2 present. The calculations involve using the molarity of the NaOH solution and the volume of breath to find the concentration of CO2. Understanding these principles is essential for accurate gas concentration measurements in various applications.
ANIMAL who
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#1-Use the Ideal Gas Law to calculate the number of moles of gas at 1.00atm in a cell 10.0cm long having a cross sectional area of 1.00cm^2 at 298K. (1ml=1cm^3)


#2-Lets say you start with 6.0 x 10^2 mL of 1.0 x 10^-4 M NaOH solution containing phenolphthalein indicator. The equation is CO_2 + OH^- yields HCO^-_3 (HCO bottom number of three with an overall negative charge) If 374 mL of a persons breath is required to turn the phenolphthalein from pink to colorless, calculate the number of moles of CO_2 per L of breath (ie., the concentration of CO_2) in this breath.
 
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ANIMAL who said:
#1-Use the Ideal Gas Law to calculate the number of moles of gas at 1.00atm in a cell 10.0cm long having a cross sectional area of 1.00cm^2 at 298K. (1ml=1cm^3)


#2-Lets say you start with 6.0 x 10^2 mL of 1.0 x 10^-4 M NaOH solution containing phenolphthalein indicator. The equation is CO_2 + OH^- yields HCO^-_3 (HCO bottom number of three with an overall negative charge) If 374 mL of a persons breath is required to turn the phenolphthalein from pink to colorless, calculate the number of moles of CO_2 per L of breath (ie., the concentration of CO_2) in this breath.

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