<span>Aluminium phosphide.....</span>
Answer:
A.
A chemical reaction was producing a new substance.
Explanation:
Equation of the reaction
NaOH + HCl --> NaCl + H2O
Heat of neutralization is the amount of heat evolved when one mole of acid reacts with one mole of an alkaline to form one mole of water.
When a neutralisation reaction is carried out, there is an exothermic change; energy released into the surroundings therefore since heat is given out which is what is felt.
you can see the light coming through the other side easily
Answer:
Standard cell potential is 0.56V
Explanation:
Standard reduction potential (
) are given below-


As
is greater than
therefore Fe will be oxidized to
and
will be reduced to Cu
Oxidation: 
Reduction: 
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Overall: 
Standard cell potential, 