The following reaction is exothermic: Write a balanced equation for the reaction

Question

The following reaction is exothermic: Write a balanced equation for the reaction (red spheres represents A atoms and ivory spheres represents B atoms). What are the signs (+ or -) of AH and AS for the reaction? Is the reaction likely to be spontaneous at lower temperatures only, at higher temperatures only, or at all temperature? One-eighth of a sample of thorium-227 remains undccayed aller 54 days. What is the half-life of this thorium isotope? Find the number of neutrons and protons in each of the following nuclei: A 25.0 ml, sample of vinegar (dilute acetic acid. CII3CO2H) is titrated and found to react with 94.7 ml. of 0.200 M NaOJi. What is the molarity (M) of the acetic acid solution? The reaction is

Explanation / Answer

1a.

6B2A = 3A2 + 6B2   (direct reading og the image)

2B2A = A2 + 2B2   (simplified)

1b.

dH is negative (reaction is exothermic)

dS is positive ( more particles on the products part)

1c.

dG = dH –TdS is negative (and the reaction is spontaneous) at all temperatures (see 1b).

    The high number is atomic mass A and is the sum of protons and neutrons.

Then the difference A-Z is the neutron number (Li has 6-3=3, C has 6, and P has 16.

      The stoichiometric molar ratio NaOH to Acetic acetic is 1:1

                VxM = V’ x M’

      M’CH3COOH = 0.0947 L x 0.200 mol/L / 0.025 L = 0.7576 ml/L

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.