Question

Which of the equations below represents the correct BALANCED equation?

a. Mg (s) + HCl (aq) --> MgCl2 (aq) + H2 (g)

b. Mg (s) + 2HCl (aq) --> MgCl2 (aq) + H2 (g)

c. 2Mg (s) + HCl (aq) --> MgCl2 (aq) + H2 (g)

d. 2Mg (s) + 2HCl (aq) --> MgCl2 (aq) + H2 (g)

Answer 1

answer is b

In order to balance out the equation, you bed to double the amount of H atoms you have and the number of CL atoms. to do this you put a 2 infrount of the HCL