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How many moles of HCI are formed from 3.5 moles of h2 and 3.5 moles of cl2?

A 5
B 7
C 1
D 2
E 0.5

Respuesta :

first, we need a reaction formula. 

H₂ + Cl₂ --> 2HCl

as the equation tells you, for every mole of each one of the reactants (H2 and Cl2) is twice for HCl (because of the coefficient)

3.5 x 2= 7 (answer is B)