Question

plz guys answer these questions.....

Answer 1

1. Thermite is a pyrotechnic composition of metal powder, which serves as fuel, and metal oxide. When ignited by heat, thermite undergoes an exothermic reduction-oxidation reaction. Most varieties are not explosive, but can create brief bursts of heat and high temperature in a small area. 
The thermite reaction can be described by the chemical equation below: Fe 2 O 3 (s) + 2 Al (s) → Al 2 O 3 (s) + 2 Fe (s) 
2.Iron virtually has no reaction with cold water. Iron reacts with steam to give iron oxide and hydrogen gas. The reaction occurs in a similar way as magnesium does, but much less vigorous.
 Iron with steam. 3Fe (s) + 4H 2 O (g) → Fe 3 O 4 (s) + 4H 2 (g) 2) 
3.In refining copper, an aqueous solution of copper(II) sulphate is electrolyzed, using impure copper as the anode and pure copper as the cathode.

At the anode, metal impurities higher than copper in the electrochemical series such as zinc, iron and lead are oxidized first, then copper loses its electrons to form copper(II) ions. Metal impurities lower than copper in the electrochemical series are hardly oxidized and deposit at the bottom of the tank as sludge.

hope it helps UHH......

Answer 2

$\mathbb{\red{\huge{HEY\:MATE}}}$

$\boxed{HERE\:IS\:YOUR\:ANSWER}$

$\mathfrak{\green{ANSWER:}}$


1. Thermite is a pyrotechnic composition of metal powder, which serves as fuel, and metal oxide. When ignited by heat, thermite undergoes an exothermic reduction-oxidation reaction. Most varieties are not explosive, but can create brief bursts of heat and high temperature in a small area. 
The thermite reaction can be described by the chemical equation below: Fe 2 O 3 (s) + 2 Al (s) → Al 2 O 3 (s) + 2 Fe (s) 
2.Iron virtually has no reaction with cold water. Iron reacts with steam to give iron oxide and hydrogen gas. The reaction occurs in a similar way as magnesium does, but much less vigorous.
 Iron with steam. 3Fe (s) + 4H 2 O (g) → Fe 3 O 4 (s) + 4H 2 (g) 2) 
3.In refining copper, an aqueous solution of copper(II) sulphate is electrolyzed, using impure copper as the anode and pure copper as the cathode.

At the anode, metal impurities higher than copper in the electrochemical series such as zinc, iron and lead are oxidized first, then copper loses its electrons to form copper(II) ions. Metal impurities lower than copper in the electrochemical series are hardly oxidized and deposit at the bottom of the tank as sludge.

$<marquee>$❣❣HOPE IT HELPS U ❣❣

$<marquee>$❣❣PLEASE MARK MY ANSWER AS BRAINLILIST ❣❣

$<marquee>$❣❣THANKS ❣❣

☺☺☺

$\boxed{BE BRAINLY}$