Answer: Hydrochloric acid poses a various health risk
Hello!
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You'll need to react
7,5 moles of Sodium with sulfuric acid to produce 3.75 moles of sodium sulfate
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First of all, you need to balance the reaction. The balanced reaction is shown below (ensuring that the Law of Conservation of Mass is met on both sides):
2Na + H₂SO₄ → Na₂SO₄ + H₂
Now, all that you have to do is to use molar equivalences in this reaction applying the coefficients to calculate the moles of Sodium that you'll need:
Have a nice day!
Answer:
Add a coefficient of 3 in front of the 02 to balance the 6 O atoms in the products
Explanation:
Add a coefficient of 3 in front of the 02 to balance the 6 O atoms in the products
Given reaction:
Mg(OH)2(s) + 2HCl(g) → MgCl2(s) + 2H2O(g)
Formula:
ΔS°rxn = ∑nS°(products) - ∑nS°(reactants)
= [S°(MgCl2) + 2S°(H2O)] -[S°(Mg(OH)2 + 2S°(HCl)]
= [89.3+2(188.7)] - [63.22+2(186.80] = 29.88 J/K
Thus, the standard entropy change for the reaction is around 30 J/K