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प्रश्न
Name:
a substance that oxidizes concentrated HCl to chlorine.
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उत्तर
MnO2
manganese(IV) oxide
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संबंधित प्रश्न
In the following reaction between lead sulphide and hydrogen peroxide:
\[\ce{PbS_{(s)} + 4H2O2_{(aq)} -> PbSO4_{(s)} + 4H2O_{(l)}}\]
- Which substance is reduced?
- Which substance is oxidised?
Explain the following in terms of gain or loss of oxygen with one example:
Reduction
When copper powder is heated strongly in air, it forms copper oxide. Write a balanced chemical equation for this reaction. Name
- substance oxidised, and
- substance reduced.
In the reaction represented by the following equation:
\[\ce{CuO_{(s)} + H2_{(g)} -> Cu_{(s)} + H2O_{(l)}}\]
- name the substance oxidised
- name the substance reduced
- name the oxidising agent
- name the reducing agent
TRUE \ FALSE
Hydrogen is a good oxidizing agent.
State whether the following conversion is oxidation or reduction:
K → K+ + e-
Choose the odd one out and write the reason:
What are redox reactions? Give examples.
Identify the type of chemical reaction given below:
\[\ce{2Mg + O2 -> 2MgO}\]
Metals are good ______.
