Question

How many moles of hydrogen gas(H2) are needed to react with 15 moles of chlorine gas

Answer 1

15 moles of hydrogen gas are needed to react with 15 moles of chlorine gas.

Step-by-step explanation:

The balanced reaction is:

H₂ (g) + Cl₂ (g) → 2 HCl (g)

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of the compounds participate in the reaction:

• H₂: 1 mole
• Cl₂: 1 mole
• HCl: 2 moles

Then you can apply the following rule of three: If 1 mole of Cl₂ reacts with 1 mole of H₂, 15 moles of Cl₂ with how many moles of H₂ does it react?

`moles of H_(2) =(15 moles of Cl_(2) *1mole of H_(2))/(1moles of Cl_(2))`

moles of H₂= 15

15 moles of hydrogen gas are needed to react with 15 moles of chlorine gas.