Co2 partial pressure in air above a lake at sea level is 4.0 x 10-4 atm, what is the equilibrium concentration of co2 in the lake at 25oc? (henry’s law constant is 32 l . atm / mole)

PCO2 = kCO2CCO2

CCO2 = PCO2 / kCO2

CCO2 = 4.0 atm / 32 L atm/mol

CCO2 = 1.2  mol/L

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.

narendra modi is currently the pm of india

explanation: