Question

what happens when dilute HCl is added to iron fillings write the reaction also what happens when dilute HCl is added to copper

Answer 1

Answer :

1. If you are referring to the chemical reaction below, the products are hydrogen gas and and iron(III) chloride.

• Fe + 2HCl ------> FeCl₂ + H₂

1. In terms of physical observations, there will be a period of rapid bubbling as the hydrogen gas escapes and a thin layer of iron(III) chloride may form.

• In case of reactive metals like Mg, Al or even Zn, Fe , a corresponding chloride is formed evolving hydrogen in the form of bubbles.

• Now ,I read that copper reacts with HCl in the presence of O2 forming CuCl2 & water though it can't displace H2.

• Cu+2HCl+1/2O2--> CuCl2+H2O

• Hope it helps you !

Answer 2

Answer :

If you are referring to the chemical reaction below, the products are hydrogen gas and and iron(III) chloride.

Fe + 2HCl ------> FeCl₂ + H₂

In terms of physical observations, there will be a period of rapid bubbling as the hydrogen gas escapes and a thin layer of iron(III) chloride may form.

In case of reactive metals like Mg, Al or even Zn, Fe , a corresponding chloride is formed evolving hydrogen in the form of bubbles.

Now ,I read that copper reacts with HCl in the presence of O2 forming CuCl2 & water though it can't displace H2.

Cu+2HCl+1/2O2--> CuCl2+H2O

Hope it helps you !