A.
Particles and energy in a system become more and more disordered.
Transfer of electrons from one species to another species is called a redox reaction. it consists of one species that will give out electrons called an oxidation reaction and the other species take in electrons called reduction reactions. both these half equations together make up a redox reaction.
In oxidation, the oxidation state increases of the species that is oxidised.
In reduction, oxidation state of the species decreases of the species that is reduced.
1)
2AgNO₃(aq) + Cu(s) → Cu(NO₃)₂<span>(aq) + 2Ag(s)
single displacement reaction
oxidation number of Ag </span>decreases from +1 to 0 - reduction reaction
oxidation number of Cu increases from 0 to +2 - oxidation
since both oxidation and reduction reactions take place its a redox reaction.
2)
BaCl₂(aq) + Na₂CrO₄(aq) → BaCrO₄<span>(s) + 2NaCl(aq)
its a double displacement reaction and the ions have been exchanged.
Oxidation numbers of the elements do not change therefore this is not a redox reaction.
3)
</span>H₃PO₄(aq) + 3KOH(aq) → 3H₂O(l) + K₃PO₄<span>(aq)
acid base reaction where the oxidation state of the elements remain the same so its not a redox reaction.
4)
</span><span>CaCO</span>₃<span>(s) → CaO(s) + CO</span>₂<span>(g)?
decomposition reaction where the oxidation states remain the same hence not a redox reaction </span>
Answer:
ITs A simpile facts
Explanation:
because a baloon get bigger when hot air enters it so yall are welcome
Answer:
The answer is melting and freezing point.
Explanation: