Question

Si + 2F2+ 6OH-4F- + SiO32-+ 3H2O

In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.

name of the element oxidized:

name of the element reduced:

formula of the oxidizing agent:

formula of the reducing agent:


2F- + HgO+ H2OHg + F2+ 2OH-

In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.

name of the element oxidized:

name of the element reduced:

formula of the oxidizing agent:

formula of the reducing agent:



H2C2O4 + 2Cr3+2CO2 + 2Cr2++ 2H+

In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.


name of the element oxidized:

name of the element reduced:

formula of the oxidizing agent:

formula of the reducing agent:

Answer 1

1)

the element oxidized: Si

the element reduced: F

the oxidizing agent: F₂

the reducing agent: Si

2) the reaction proceeds in the opposite direction

the element oxidized: Hg

the element reduced: F

the oxidizing agent: F₂

the reducing agent: Hg

3)

the element oxidized: C

the element reduced: Cr

the oxidizing agent: Cr³⁺

the reducing agent: H₂C₂O₄