If 2g of zinc reacted with excess hydrogen chloride acid
If 2 grams of zinc reacted with excess hydrochloric acid, the reaction would produce zinc chloride and hydrogen gas. The balanced chemical equation for this reaction is:
Zn + 2HCl -> ZnCl2 + H2
According to the equation, one mole of zinc reacts with 2 moles of hydrochloric acid to produce 1 mole of zinc chloride and 1 mole of hydrogen gas.
To calculate the amount of zinc chloride and hydrogen gas produced, we need to convert the mass of zinc to moles. The molar mass of zinc is 65.38 g/mol.
Number of moles of zinc = mass of zinc / molar mass of zinc
= 2 g / 65.38 g/mol
= 0.0305 mol
According to the balanced equation, the stoichiometric ratio between zinc and zinc chloride is 1:1. Therefore, the number of moles of zinc chloride produced will also be 0.0305 mol.
The stoichiometric ratio between zinc and hydrogen gas is 1:1 as well. Therefore, the number of moles of hydrogen gas produced will also be 0.0305 mol.
In conclusion, if 2 grams of zinc reacted with excess hydrochloric acid, it would produce 0.0305 moles of zinc chloride and 0.0305 moles of hydrogen gas.
To determine the steps involved in the reaction between 2g of zinc and excess hydrogen chloride (HCl) acid, we need to follow these steps:
Step 1: Calculate the moles of zinc
The molar mass of zinc is 65.38 g/mol. To calculate the moles of zinc, divide the given mass (2g) by the molar mass.
Moles of zinc = Mass of zinc / Molar mass of zinc
Moles of zinc = 2g / 65.38 g/mol
Step 2: Write the balanced chemical equation
The balanced chemical equation for the reaction between zinc and hydrogen chloride is:
Zn + 2HCl → ZnCl2 + H2
Step 3: Determine the limiting reagent
To find the limiting reagent, compare the mole ratio of zinc and hydrogen chloride from the balanced equation.
From the equation, we can see that 1 mole of zinc reacts with 2 moles of hydrogen chloride.
So, the moles of hydrogen chloride needed would be twice the moles of zinc.
Step 4: Calculate the moles of HCl
Since excess hydrogen chloride is used, the moles of hydrogen chloride will be greater than the moles of zinc.
Moles of HCl = 2 x Moles of zinc
Step 5: Calculate the mass of hydrogen chloride reacted
Now, we can calculate the mass of hydrogen chloride that reacted by multiplying the moles of HCl by the molar mass of HCl.
Mass of HCl reacted = Moles of HCl x Molar mass of HCl
Step 6: Calculate the mass of hydrogen produced
From the balanced equation, we can see that 1 mole of zinc produces 1 mole of hydrogen gas.
Therefore, the moles of hydrogen gas produced will be equal to the moles of zinc reacted.
Step 7: Calculate the mass of hydrogen produced
To calculate the mass of hydrogen gas produced, multiply the moles of hydrogen gas by the molar mass of hydrogen (2g/mol).
Mass of hydrogen produced = Moles of hydrogen x Molar mass of hydrogen
By following these steps, you will be able to determine the masses of hydrogen chloride reacted and the hydrogen gas produced when 2g of zinc reacts with an excess amount of hydrogen chloride acid.