Question

iron reacts with hydrochloric acid to produce iron 2 chloride and hydrogen gas. What mass of hydrochloric acid is needed to produce 48.2 g FeCl2?

Answer 1

Answer: 27. 7g of HCl

Explanation:Please see attachment for explanation

Answer 2

We need 27.7 grams of HCl to produce 48.2 grams of FeCL2

Step-by-step explanation:

Step 1: Data given

Mass of FeCl2 produced = 48.2 grams

Molar mass of FeCl2 = 126.75 g/mol

Step 2: The balanced equation

Fe (s) + 2 HCl (aq) → FeCl2 (aq) + H2 (g)

Step 3: Calculate moles of FeCl2

Moles FeCl2 = mass FeCl2 / molar mass FeCl2

Moles FeCl2 = 48.2 grams / 126.75 g/mol

Moles FeCl2 = 0.380 moles

Step 4: Calculate moles of HCl

For 1 mol of Fe we need 2 moles of HCl to produce 1 mol of FeCl2

For 0.380 moles of FeCl2 we need 2*0.380 moles of HCl = 0.760 moles of HCl

Step 5: Calculate mass of HCl

Mass of HCl = moles HCl * molar mass of HCl

Mass of HCl : 0.760 moles * 36.46 g/mol

Mass of HCl = 27.7 grams

We need 27.7 grams of HCl to produce 48.2 grams of FeCL2