They have different ratios of elements. Water is H20 and Hydrogen Peroxide is H202. The extra oxygen atom in hydrogen peroxide causes it to be structured and react differently.
Answer:
2H⁺ + 2e → H₂.
Zn → Zn²⁺ + 2e.
Explanation:
- The reaction includes two half-reactions:
<em>The reduction reaction:</em>
<em>2H⁺ + 2e → H₂.</em>
- 2.0 moles of hydrogen ions is reduced by 2 electrons to produce 1.0 mole of hydrogen gas.
<em>The oxidation reaction:</em>
<em>Zn → Zn²⁺ + 2e.</em>
- 1.0 mole of Zn metal is oxidized to Zn²⁺ and releases 2 electrons.
- <em>The overall reaction will be:</em>
<em>Zn + 2H⁺ → Zn²⁺ + H₂.</em>
The molarity of the HCl solution : 1.052 M
<h3>Further e
xplanation</h3>
Given
Volume of HCl = 38.55 ml
mass of Na₂CO₃ (MW=106 g/mol)=2.15 g
Reaction
Na₂CO₃(aq) + 2HCl (aq)→ 2NaCl (aq) + CO₂ (g) + H₂0 (l)
Required
The molarity of the HCl solution
Solution
mol Na₂CO₃ :
From the equation, mol ratio Na₂CO₃ : HCl = 1 : 2, so mol HCl :
The molarity :
<span>Answer:
Ground state of Hydrogen = -13.6 eV Energy of photon emission: E = hf = hc/λ = 6.6256E-34 (3E8)/680E-9 E = 0.0292E-17 J(1 eV/1.6E-19 J) = 1.825 eV E(photon) = 1.825 eV Bandgap energy: ΔE = E – Eo = 1.825 – (-13.6) = 15.425 eV</span>
