The percent yield shows the extent to which reactants are converted to products. The percent yield of ammonia is 24.7%
<h3>Percent yield</h3>
The percent yield is obtained from the theoretical yield and the actual yield. The reaction between hydrogen and Nitrogen is;
3H2 + N2 ---->2NH3
If 1 mole of H2 occupies 22.4 dm^3
x moles occupies 12dm^3
x = 0.54 moles
If 1 mole of NH3 occupies 22.4 dm^3
x moles of ammonia occupies 2 dm^3
x = 0.089 moles
Now;
From the reaction equation;
3 moles of hydrogen yields 2 moles of NH3
0.54 moles of hydrogen will yiled 0.54 moles * 2 moles/3 moles
= 0.36 moles of ammonia
Percent yield = 0.089 moles/0.36 moles * 100 = 24.7%
The percent yield of ammonia is 24.7%
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Answer:
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:
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
Answer:
exothermic reaction
when compounds dissolve they produce heat hence a chemical reaction that produces heat is known as endothermic reaction.