- A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Can you predict the element ‘X’ and the black coloured substance formed?
- A shiny brown colored element ‘X’ on heating in the air becomes black in color. Name the element ‘X’ and the black colored compound formed.
- A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Can you predict the element ‘X’ and the black coloured substance formed?
- A shiny brown colored element ‘X’ on heating in the air becomes black in color. Name the element ‘X’ and the black colored compound formed.
A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Can you predict the element ‘X’ and the black coloured substance formed?
The brown coloured element is copper (Cu). On heating copper reacts with oxygen present in the atmosphere to form copper oxide which is black in colour. The reaction is shown below. If we pass hydrogen gas over hot copper oxide we will notice that black coating on copper turns brown because copper oxide loses oxygen to form copper. This will support our prediction.
A shiny brown colored element ‘X’ on heating in the air becomes black in color. Name the element ‘X’ and the black colored compound formed.
Reaction of Copper with air: • Copper ( Cu) is actually a chemical element with atomic number 29. • It is actually a native element which occurs in the nature in the pure form. • Copper is actually brown in color and also on reaction with oxygen it forms Copper oxide which is black in color. • So basically, when Copper metal is heated in air. • It will get oxidized for the formation of Copper oxide which is black in color. • This all is actually a redox reaction in which the Copper is oxidized to Copper oxide and so the Oxygen is reduced. • Reaction: 2 Cu ( s ) Copper + O 2 ( g ) Oxygen → 2 CuO ( s ) Copper oxide. Therefore, A shiny brown element ‘X’ which on heating in air becomes black in color is basically Copper element and black colored compound formed is Copper oxide.
A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Can you predict the element ‘X’ and the black coloured substance formed?
The brown coloured element is copper (Cu). On heating copper reacts with oxygen present in the atmosphere to form copper oxide which is black in colour. The reaction is shown below. If we pass hydrogen gas over hot copper oxide we will notice that black coating on copper turns brown because copper oxide loses oxygen to form copper. This will support our prediction.
A shiny brown colored element ‘X’ on heating in the air becomes black in color. Name the element ‘X’ and the black colored compound formed.
Reaction of Copper with air: • Copper ( Cu) is actually a chemical element with atomic number 29. • It is actually a native element which occurs in the nature in the pure form. • Copper is actually brown in color and also on reaction with oxygen it forms Copper oxide which is black in color. • So basically, when Copper metal is heated in air. • It will get oxidized for the formation of Copper oxide which is black in color. • This all is actually a redox reaction in which the Copper is oxidized to Copper oxide and so the Oxygen is reduced. • Reaction: 2 Cu ( s ) Copper + O 2 ( g ) Oxygen → 2 CuO ( s ) Copper oxide. Therefore, A shiny brown element ‘X’ which on heating in air becomes black in color is basically Copper element and black colored compound formed is Copper oxide.
