WHAT HAPPENS WHEN:

1 STEAM IS PASSED OVER RED HOT IRON?

2Mg IS TREATED WITH di.H2SO4?

3 STEAM IS PASSED OVER RED HOT COKE?

SIR, HOW I COME TO KNOW THIS IN COMPETITIVE EXAMS??????

Dear student,

Iron does not react with water in the ordinary temperature. It reacts only with steam. When steam is passed over red-hot iron, iron (II,III) oxide and hydrogen gas are formed.

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

sagarsingh24.iitd@gmail.com

As, we know that Mg is a metal and when it reacts with dilute acid  it forms salt and hydrogen gas.

         Mg   +     H₂SO4 _(dil)           forms           MgSO₄   +    H₂    

Dear Student

1. Iron does not react with water in the ordinary temperature. It reacts only with steam. When steam is passed over red-hot iron, iron (II,III) oxide and hydrogen gas are formed.

2. Magnesium is more reactive than hydrogen and it displaces hydrogen from dilute acids. Magnesium reacts with dilute sulphuric acid to form magnesium sulphate and hydrogen gas is evolved. This is a single displacement reaction and also exothermic.

3.When steam is passed over red hot coke, water gas (CO+ H₂O)is formed.

I hope this answer will help you.
Thanks & Regards
Yash Chourasiya