please help me with this chemistry problem.
1) Write out a balanced chemical reaction equation for the reaction of magnesium with hydrochloric acid,
and then
What is the Theoretical Yield after balancing the chemical equation?
Metal + acid ---> metal salt + hydrogen gas
Mg + HCl --> MgCl2 + H2
If you place the correct coefficient in front of HCl, you will have the chemical equation balanced for Cl and H (which it is not now).
The balanced chemical equation assumes a theoretical yield of 100%. To calculate the actual yield we must know the amounts of reactants (Mg and HCl) actually used.
To write out a balanced chemical reaction equation for the reaction of magnesium with hydrochloric acid, we need to determine the chemical formula of each compound and then balance the equation.
The chemical formula for magnesium is Mg and for hydrochloric acid is HCl.
The balanced chemical reaction equation is as follows:
Mg + 2HCl -> MgCl2 + H2
To determine the theoretical yield, we need to know the amount of reactants we have and the stoichiometry of the balanced equation. However, since the question doesn't provide any specific values, we cannot calculate the theoretical yield.
Theoretical yield is the maximum amount of product that can be obtained from a given amount of reactant, assuming 100% efficiency and complete conversion of reactants to products.
To write a balanced chemical reaction equation for the reaction between magnesium and hydrochloric acid, we first need to understand the reaction itself. The reaction of magnesium with hydrochloric acid produces magnesium chloride and hydrogen gas. Here's how we can balance the equation step by step:
Step 1: Write the unbalanced equation
Mg + HCl → MgCl2 + H2
Step 2: Balance the number of atoms on each side of the equation
Mg + 2HCl → MgCl2 + H2
Now that we have a balanced chemical equation, we can move on to the theoretical yield. The theoretical yield represents the maximum amount of product that can be obtained from a given amount of reactant based on the stoichiometry of the balanced equation.
To find the theoretical yield, we need to know the amount of one of the reactants (either magnesium or hydrochloric acid) and the molar ratio between the reactant and the product we are interested in, which is magnesium chloride.
Let's assume we have 10 grams of magnesium and excess hydrochloric acid. We need to calculate the moles of magnesium and then use the balanced equation to determine the mole ratio between magnesium and magnesium chloride.
Step 1: Calculate the moles of magnesium
To calculate moles, we need to know the molar mass of magnesium. Magnesium has an atomic mass of 24.31 g/mol.
moles of magnesium = mass of magnesium / molar mass of magnesium
moles of magnesium = 10 g / 24.31 g/mol
moles of magnesium = 0.411 mol
Step 2: Use the balanced equation to determine the mole ratio
From the balanced equation, we see that the mole ratio between magnesium and magnesium chloride is 1:1, which means for every 1 mole of magnesium, we will produce 1 mole of magnesium chloride.
Step 3: Calculate the theoretical yield of magnesium chloride
theoretical yield (in moles) of magnesium chloride = moles of magnesium
theoretical yield (in moles) of magnesium chloride = 0.411 mol
Now, if you want to find the theoretical yield in grams, you need to multiply the moles by the molar mass of magnesium chloride, which is 95.21 g/mol.
theoretical yield (in grams) of magnesium chloride = theoretical yield (in moles) of magnesium chloride * molar mass of magnesium chloride
theoretical yield (in grams) of magnesium chloride = 0.411 mol * 95.21 g/mol
theoretical yield (in grams) of magnesium chloride = 39.13 g
Therefore, the theoretical yield of magnesium chloride, after balancing the chemical equation and considering the given amount of magnesium, is 39.13 grams.