Question

Does anyone know the answer to this chemistry question?!? How much HCl is made when 2g of hydrogen reacts? H2+Cl2->2HCl

Answer 1

146g

Step-by-step explanation:

We're assuming the reaction is occurring with excess chloride. First convert hydrogen mass to moles using molar mass - you need to work with numbers for these sorts of questions:

n = m / MM

n = 2g / 1g/mol

n = 2mol

Now use your stoich ratio to find how many moles of HCL are produced. There are 2 moles of HCl produced for every 1 mole of H2 reacted so:

x HCl / 2 mol H2 = 2 HCl / 1 H2

x = 4mol HCl

Now convert this back into mass using the molar mass of HCl:

m = n x MM

m = 4mol x 36.5g/mol

m = 146g