S in (SO4)-2 has a charge of +6, in SO2 S has a charge of +4. To go from +6 to +4 you must gain two electrons. The (SO4)-2 is reduced (reduction is gaining electrons). Therefore it reduces the 2br-, so (SO4)-2 is the reducing agent
2F2 + 4NaOH >> 4NaF + O2 + 2H2O
I assume you were looking to balance the reaction: CH4 + 2O2 --> CO2 +2H2O
When mixed, sulphuric acid (H2SO4) and sodium hydroxide (NaOH) will undergo a neutralization reaction to form water (H2O) and sodium sulfate (Na2SO4). The balanced chemical equation for this reaction is 2NaOH + H2SO4 → 2H2O + Na2SO4.
The balanced chemical equation for this reaction is: 2HCl(aq) + Ba(OH)2(aq) → BaCl2(aq) + 2H2O(l). This is a double displacement reaction where barium hydroxide reacts with hydrochloric acid to form barium chloride and water.
The chemical equation h2 + o2 -> h2o represents the reaction between hydrogen gas and oxygen gas to produce water. This reaction is a combustion reaction where hydrogen and oxygen combine to form water in a highly exothermic reaction, releasing energy in the form of heat and light.
Magnesium is the oxidising agent.
The oxidizing agent in the reaction CH4 + 2O2 → CO2 + 2H2O is oxygen (O2). Oxygen is the substance that is gaining electrons and causing the methane (CH4) to oxidize.
this is an exotermic reaction
This is an oxidation-reduction reaction.
It is an eothermic type of reaction.
A combustion reaction.
2H2O--->2H2 + O2 is a redox reaction because electrons are exchanged during electrolysis.
The products of this chemical reaction are carbon dioxide (CO2), water (H2O), and energy.
2F2 + 4NaOH >> 4NaF + O2 + 2H2O
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In the reaction between 2HCl and Ca(OH)2, HCl acts as an acid, while Ca(OH)2 acts as a base. No oxidizing agent is involved in this particular reaction. The products of this reaction are CaCl2 and 2H2O.
I assume you were looking to balance the reaction: CH4 + 2O2 --> CO2 +2H2O