Sa se calculeze presiunea exercitata de 2 moli de h2 într un vas cu vol de 10l la temperatura de 27gc
1 answer:
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Answer:
C - Cl = Polar (Chlorine has an electronegativity of 3.16 and Carbon has 2.55. The difference between the two determines if the bond is polar or non polar, and the difference is 0.61 which means its polar)
Br - Br = Non-polar (Diatomic molecules are non-polar)
N - O= Non-polar ( The electronegativity difference is 0.4, making it non-polar)
P - Cl= Polar (The difference in electronegativity between them is 0.97, making it polar)
Answer:
- [H₃O⁺] = 7.586×10⁻⁴ M
Explanation:
The <em>pH</em> of a solution is a measure of the <em>molar concentration of </em><em>H₃O⁺</em> ions in the solution.
The mathematical expresssion that states the relation between the molar concentration of H₃O⁺ ions and the pH of the solution is:
- pH = - log [H₃O⁺].
This is pH is numerically equal to the negative decimal logarithm of the molar concentration of H₃O⁺.
The square brackets are used to indicate molar concentration.
Thus:
- pH = - log [H₃O⁺] ← equation
- 3.120 = -log [H₃O⁺] ← substituting values
- - 3.120 = log [H₃O⁺] ← product property of the multiplication
← antilogarithm property
- [H₃O⁺] = 7.586×10⁻⁴ M ← result