produces 4 g of Hydrogen
1000 g of water produces X g of Hydrogen.
X = 4 * 100 / 36 = 111.1 g
I mole of Gas under normal conditions occupies 22.4 liters.
So we have to know how many moles of H2 are produced.
1 mole of H2 equals 2 g
X mole of H2 equals 111.1g
X = 111.1g / 2g = 50.6 moles of H2
1 mole of H2 occupies 22.4 liters
50.6 moles of H2 occupy X liters
X = 50.6 moles * 22.4L = 1232 L
Equilibrium. Le Chatelier’s Principle
Any chemical reaction goes both ways
According to Le Chatelier, if at equilibrium point we make any change in concentration, pressure or temperature the point of equilibrium will move to counteract the change.
If the reaction produces heat then heating the system will move the equilibrium to the left and cooling the system will move the equilibrium to the right. If volume of the products is greater than the volume of the reactants then increasing the pressure will move the equilibrium to the left. Decreasing the pressure will move the equilibrium to the right. Increasing concentration of reactants will move the equilibrium to the right, increasing concentration of the products will move the equilibrium to the left.
Equilibrium constant K c = [C] * [D] / [A] * [B]
where [] is concentration in moles
H2 + I2 <=> 2HI
The concentration of products and reactants is raised to the power of their respective coefficients.
K c = [HI] ^2 / [H2] [I2]
The concentration of products and reactants is raised to the power of their respective coefficients: a, b, c, d.
Let us calculate the equilibrium constant for the following reaction.
2Al +6HCl + H20= 2AlCl3 +3H2
The concentration of HCl is 0,5 M, the concentration of AlCl3 is 0.2M and the concentration of H2 is 0.2M at equilibrium point.
Конец ознакомительного фрагмента.
Текст предоставлен ООО «ЛитРес».
Прочитайте эту книгу целиком, купив полную легальную версию на ЛитРес.
Безопасно оплатить книгу можно банковской картой Visa, MasterCard, Maestro, со счета мобильного телефона, с платежного терминала, в салоне МТС или Связной, через PayPal, WebMoney, Яндекс.Деньги, QIWI Кошелек, бонусными картами или другим удобным Вам способом.
