Answer:
2H⁺ + NO₃⁻ + 1e⁻ → NO₂ + H₂O
Explanation:
NO₃⁻ → NO₂
In left side, Nitrogen acts with +5 by oxidation number
In right side, the oxidation number is +4
This is a reduction reaction, because the oxidation number has decreased. So the N has gained electrons.
NO₃⁻ + 1e⁻ → NO₂
In acidic medium, we have to add water, where there are less oxygens to ballance the amount. We have 2 O in left side, and 3 O in right side, so we have to add 1 H₂O on left side.
NO₃⁻ + 1e⁻ → NO₂ + H₂O
Now that oxygens are ballanced, we have to ballance the hydrogens by adding protons in the opposite side
2H⁺ + NO₃⁻ + 1e⁻ → NO₂ + H₂O
<h2><u>My </u><u>Answer</u><u> </u></h2>
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My Explanation</h2>
Although caffeine (a stimulant found in coffee and tea) is a relatively complicated molecule, it's only eight atoms of carbon, ten of hydrogen, four of nitrogen and two of oxygen – C8H10N4O2. This kind of representation is called a molecular formula – it tells us what kind of atoms we have, and how many of each.
<h2>#CarryOnLearning</h2>
Answer : Option D) Step A has a greater activation energy, so it is slower than Step B.
Explanation : Here we can clearly see that when the reactants undergo step A and then forms an intermediate which goes to step B and then finally yielding products. This both the steps undergo an endothermic reaction as the energy of reactants is lower than that of products. Also we can compare the energy of activation of step A with step B and see that energy of activation of step A is higher than step B. So, step A is much slower than step B.
Answer:
285.6
Explanation:
(283.4×0.3460)+(284.7×0.2120)+(287.8×0.4420)
=285.6204
Condensation because the water vapor has a high entropy(disorder) and liquid water has a lower entropy.
