A dilute solution of sulfuric acid is added to 15g of copper and iron mixture. a) write the balanced equation for the occuring reaction. b) the volume of H2 evolved at standard conditions is 4.48L, what is the mass of each of the metals constituting the mixture? Vm=24mol.L-1

I have this question on my book (CRDP Lebanon) and I randomly found this on the internet lol.

H2SO4 + Cu ==> no reaction in the cold.

H2SO4 + Fe ==> FeSO4 + H2

4.48 L x (1 mol/24 L) = mols H2.
Using the coefficients in the balanced equation to convert mols H2 to mols Fe.
grams Fe = mols Fe x atomic mass Fe
Subtract from initial sample to find mass Cu

No thing

Close your book and play ''Moblie legend :bang bang''

Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

No response just I hate chem

If you is smart you can know that 1+1=11

20 5.5 g of bronze (an alloy of copper and tin, Cu-Sn) containing 23 % of Sn are dipped in an excess of HCI. a) Write the balanced equation of the occur- ring reaction. b) What is the volume of H2 evolved when the molar volume of the gas is 24 L.mol? c) What is the final concentration of Snt ions produced if the volume of the solution is 200 mL?

To find the balanced equation for the reaction between sulfuric acid and copper and iron mixture, we need to determine the reaction between each metal and sulfuric acid separately.

a) Reaction between sulfuric acid and copper:
1. Write the chemical equation using the reactants and products involved:
Cu + H2SO4 -> CuSO4 + H2
2. Balance the equation by ensuring that the number of atoms on both sides of the equation is equal:
Cu + 2H2SO4 -> CuSO4 + 2H2O

b) Reaction between sulfuric acid and iron:
1. Write the chemical equation using the reactants and products involved:
Fe + H2SO4 -> FeSO4 + H2
2. Balance the equation:
Fe + H2SO4 -> FeSO4 + H2

Now that we have the balanced equations for the reactions, we can determine the mass of each metal using the volume of hydrogen gas evolved.

First, convert the volume of hydrogen gas evolved from liters to moles using the given molar volume of hydrogen gas: 1 L of any gas at standard conditions (STP) is equal to 24 mol.

Given:
Volume of H2 evolved = 4.48 L
Vm (Molar Volume) = 24 mol/L

Convert volume to moles:
Moles of H2 = Volume of H2 evolved / Vm
Moles of H2 = 4.48 L / 24 mol/L
Moles of H2 = 0.1866 mol

Since the stoichiometry of the reaction shows that for every 1 mole of H2, we have 1 mole of Cu, we can conclude that the moles of copper (Cu) in the sample are also 0.1866 mol.

Now, calculate the mass of copper:
Mass of Cu = Moles of Cu x Molar Mass of Cu

The molar mass of copper (Cu) is approximately 63.55 g/mol.

Mass of Cu = 0.1866 mol x 63.55 g/mol
Mass of Cu = 11.82 g

Therefore, the mass of copper in the mixture is approximately 11.82 grams.

Similarly, for iron (Fe), we can determine the mass using the same steps.

Since the stoichiometry of the reaction shows that for every 1 mole of H2, we have 1 mole of Fe, we can conclude that the moles of iron (Fe) in the sample are also 0.1866 mol.

Now, calculate the mass of iron:
Mass of Fe = Moles of Fe x Molar Mass of Fe

The molar mass of iron (Fe) is approximately 55.845 g/mol.

Mass of Fe = 0.1866 mol x 55.845 g/mol
Mass of Fe = 10.41 g

Therefore, the mass of iron in the mixture is approximately 10.41 grams.

Your subject looks like chemistry to me. If you need a tutor to study national school, that's another matter.