A. Nitrate is the reduced element.
B. Phosphorus is the oxidized element.
C. oxidation half reaction:
P4 + 4H2O ⇒ H2PO4- + 6H+ + 5e
D. Reduction half reaction: NO3- +4H+ 3e- ⇒ NO + 2H2O
Explanation:
P4 + NO3–→ H2PO4– + NO(A)
nitrate is the reduced element as it has lower its oxidation state.
phosphorus is the oxidised element as it has increase in oxidation number.
B) OXIDATION REACTION:
Phosphorus has undergone oxidation from P0 to P5
P4 + 4H2O ⇒ H2PO4- + 6H+ + 5e-
C) REDUCTION REACTION:
Nitrate ion had undergone reduction from nitrate anion to nitrous oxide.
N+5 to N+2
NO3- +4H+ 3e- ⇒ NO + 2H2O
REDOX REACTION:
now multiplying oxidation reaction with 3 and the reduction reaction with 5
P4 + 5NO3- +2H+ + 2H2O⇒ 5NO+3H3PO4-
Answer:
The enthalpy of solution for AgNO3 is positive because the temperature of the solution decreases (the dissolution is endothermic). Hsol = Hsolute + Hsolvent + HmixHsolute and Hsolvent are endothermic because energy is required to overcome intermolecular forces and separate solute and solvent particles.
Proton is bigger than an atom
The actual yield of the product in the given reaction is 68.62 grams.
The ratio of the reaction's actual yield to its theoretical yield, multiplied by 100 is known as the percent yield. The amount of a product that is produced as a result of a chemical reaction is known as the actual yield. And, the amount of a product that results from the total conversion of the limiting reactant in a chemical process is known as the theoretical yield.
From the percent yield formula,
![\text{actual yield}=\frac{\text{percent yield} \times\text{theoretical yield}}{100\%}](https://tex.z-dn.net/?f=%5Ctext%7Bactual%20yield%7D%3D%5Cfrac%7B%5Ctext%7Bpercent%20yield%7D%20%5Ctimes%5Ctext%7Btheoretical%20yield%7D%7D%7B100%5C%25%7D)
Here, given, the percent yield is 89.7% and the theoretical yield is 76.5%. Then, the actual yield is,
![\begin{aligned}\text{actual yield}&=\frac{89.7\%\times\mathrm{76.5\;g}}{100\%}\\&=\mathrm{68.62\;g}\end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%5Ctext%7Bactual%20yield%7D%26%3D%5Cfrac%7B89.7%5C%25%5Ctimes%5Cmathrm%7B76.5%5C%3Bg%7D%7D%7B100%5C%25%7D%5C%5C%26%3D%5Cmathrm%7B68.62%5C%3Bg%7D%5Cend%7Baligned%7D)
The answer is 68.62 grams.
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The correct answer is fracture formation.
Fracture formation is not an indication of a chemical change.
Gas production, energy transfer are Precipitate information indications of a chemical change.
A chemical change is an irreversible process wherein there are rearrangements of the atoms in the molecules of a compound, resulting in the formation of a new compound with new chemical properties or composition.
A fracture is a fault line that divides rocks into two or more pieces. A fracture is a geological formation. Fracture is most often seen as crevice or deep fissures in rocks.