due to th H3PO$ has 3 ionization steps any step give hydrogen ion (H2PO4 + H and HPO4 + H)with one electron which compine with other hydrogen to give hydrogen gas and two electron which make redction reaction and soon
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Hydrogen phosphite can not (easily) be reduced to phosphorus (P) by taking up 3 electrons when reacting as oxidant. The only oxidant action could come from H+ (forming H2 gas, eg. with reactive metals)
Acting as reductant phosphate (H3PO4 ) is formed (by 2 electrons donation) quite easily
H3PO4 is already fully oxidized; it cannot accept another oxygen atom, so cannot reduce something.
No, helium is an inert gas and does not readily undergo chemical reactions. It is not a good reducing agent as it does not have the ability to donate electrons to other substances.
H2 (hydrogen gas) is the best reducing agent among the options provided. A good reducing agent tends to easily lose electrons to other substances, making it capable of reducing another substance by donating electrons. Hydrogen has a strong tendency to donate its electrons and is often used as a reducing agent in various chemical reactions.
Sodium oxalate (Na2C2O4) is used as a reducing agent because it can be oxidized easily by various oxidizing agents. The presence of two carbonyl groups in the oxalate ion makes it a good reducing agent by readily giving up electrons to reduce other substances. It is commonly employed in analytical chemistry and some industrial processes.
h2so4 being good oxidising agent oxidises the h2s to h2o and free sulphur.so conc h2so4 cant be used in preparation of h2s gas
Magnesium is a good reducing agent because it readily gives up electrons to form magnesium ions, which allows it to reduce other substances by donating electrons in chemical reactions.