Mg + 2HCl → MgCl2 + H2 How many grams of hydrochloric acid (HCI) is needed to produce 200g of H2? July 30, 2021 by Thái Dương Mg + 2HCl → MgCl2 + H2 How many grams of hydrochloric acid (HCI) is needed to produce 200g of H2?
Answer: 7242.1g Explanation: The balanced equation for this reaction is as follows: Mg + 2HCl → MgCl2 + H2 From the above equation, it can be observed that 2 moles of HCl is needed to produce 1 mole of H2. Using the formula below, we convert the mass of H2 to moles; Molar mass of H2 = 2.016g/mol mole = 200/2.016 mole = 99.21mol of H2 Since 2 moles of HCl is needed to produce 1 mole of H2. Then 99.21 moles of H2 will be produced by 99.21 × 2 = 198.4mol of HCl Molar mass of HCl = 1 + 35.5 = 36.5g/mol Mole = mass/molar mass Mass = molar mass × mole Mass = 36.5 × 198.4 Mass = 7242.1g Reply
Answer:
7242.1g
Explanation:
The balanced equation for this reaction is as follows:
Mg + 2HCl → MgCl2 + H2
From the above equation, it can be observed that 2 moles of HCl is needed to produce 1 mole of H2.
Using the formula below, we convert the mass of H2 to moles;
Molar mass of H2 = 2.016g/mol
mole = 200/2.016
mole = 99.21mol of H2
Since 2 moles of HCl is needed to produce 1 mole of H2.
Then 99.21 moles of H2 will be produced by 99.21 × 2 = 198.4mol of HCl
Molar mass of HCl = 1 + 35.5
= 36.5g/mol
Mole = mass/molar mass
Mass = molar mass × mole
Mass = 36.5 × 198.4
Mass = 7242.1g