ConstantsI Perciodic Table The folowing table provides some information on carbo

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ConstantsI Perciodic Table The folowing table provides some information on carbon dioxide solubility in water The sclubility of a gas in a liquid increases with (mol/L) (atm) (m L-1 atm 3.70102 1.00 5.20x102 C) 20.0 20.0 25.0 increasing pressure. To understand the above statement, consider a familiar example: cola. In cola and other soft drinks, carbon dioxide gas remains dissolved in solution as long as the can or bottle remains pressurized. As soon as the lid is opened and pressure is released, the CO2 gas is much less soluble and escapes into the air 1.00 3.40x102 The relationship between pressure and the solubility of a gas is expressed by S kP, where S is concentration in M, k is the Henry's law constant in units of mol/(L atm), and P is the pressure in atm law: Part A What is the Henry's law constant for CO2 at 20 C? Express your answer to three significant figures and include the appropriate units Note: Since temperature also affects the solubility of a gas in an liquid, the Henry's law constant is specific to a particular gas at a particular temperature View Available Hints) 0.0370 mol -atm Previous Answers Correct

Explanation / Answer

Part c

P = 1 atm and T = 20°C

Volume V = 1 L

Solubility S = 3.70*10^-2 mol/L

Moles of CO2 = S x V

n1 = 3.70*10^-2 mol/L x 1L = 0.0370 mol

Similarly

P = 1 atm and T = 25°C

Volume V = 1 L

Solubility S = k x P = 3.40*10^-2 mol/(L-atm) x 1 atm

= 3.40*10^-2 mol/L

Moles of CO2 = S x V

n2 = 3.40*10^-2 mol/L x 1L = 0.0340 mol

Moles of CO2 released = n1 - n2

= 0.0370 - 0.0340

= 0.0030 mol

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