Answer:
C
Explanation:
OH- = 1 X 10^-14 / 1 X 10^-5
= 1 X 10^-9
Answer:
a. Oxygen
b. 20.39g of Al₂O₃
c. 87%
Explanation:
In order to produce 2moles of Al₂O₃, we need to make react 4 moles of Al, to 3 moles of O₂.
We determine the limiting reactant with the moles of each:
12.98g / 26.98g/mol = 0.481 moles of Al
9.6g / 32g/mol = 0.300 moles of oxygen
4 moles of Al react to 3 moles of O₂
Then, 0.481 mol may react to (0.481 . 3)/4 = 0.361 moles
We only have 0.300 moles of O₂ and we need 0.361. Oxygen is the limiting reactant.
So 3 moles of O₂ can produce 2 moles of Al₂O₃
Our 0.300 moles may produce (0.300 . 2) / 3 = 0.200 mol
Our theoretical yield is: 0.2 mol . 101.96g/ mol = 20.39 g
To determine the percent yield we calculate:
(Produced yield/ Thoeretical yield) . 100 → (17.74 /20.39) . 100 = 87%
Answer:
![n_{NH_3}^{produced}=6.3molNH_3](https://tex.z-dn.net/?f=n_%7BNH_3%7D%5E%7Bproduced%7D%3D6.3molNH_3)
Explanation:
Hello there!
In this case, according to the given chemical reaction, it is possible for us to use the 1:2 mole ratio of nitrogen to ammonia to calculate the moles of the latter that are produced when reacting 3.15 moles of the former with hydrogen as shown below:
![n_{NH_3}^{produced}=3.15molN_2*\frac{2molNH_3}{1molN_2}](https://tex.z-dn.net/?f=n_%7BNH_3%7D%5E%7Bproduced%7D%3D3.15molN_2%2A%5Cfrac%7B2molNH_3%7D%7B1molN_2%7D)
Thus, by solving the equation we obtain:
![n_{NH_3}^{produced}=6.3molNH_3](https://tex.z-dn.net/?f=n_%7BNH_3%7D%5E%7Bproduced%7D%3D6.3molNH_3)
Best regards!
Answer:
<u>In this reaction heat is released</u>
Explanation:
Exothemic Reactions : Those reactions in which heat is released when the products are formed .
For such reaction The enthalpy change is negative.
for exothermic reaction
Endothermic Reactions : Those reaction which proceed by absorbing heat . Here heat is absorbed. The enthalpy change for such reactions is positive.
When the direction of reaction reverses , the value of H also changes.
In the given reaction,
![X + Y\rightarrow Z +Q](https://tex.z-dn.net/?f=X%20%2B%20Y%5Crightarrow%20Z%20%2BQ)
= heat is absorbed
So,
![Z+Q\rightarrow X+Y](https://tex.z-dn.net/?f=Z%2BQ%5Crightarrow%20X%2BY)
= heat is<u> released</u>
<u></u>
<u>E</u><em>xothermic reactions are more spontaneous as compared to endothermic ractions. This means that they proceed own their own . Only little amount of energy is supplied to exothermic reaction to produce the prodct.</em>
The formula unit equation for the given reaction occurring in water is
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
<h3>What is chemical reaction?</h3>
Chemical reactions are those reaction in which reactant molecules react with each other for the formation of product.
When calcium sulfide reacts with iron (II) bromide for the formation of iron(II) sulfide and calcium bromide will be represented through the following equation:
CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq)
Above reaction best explains the formula unit of given reaction as all valency of atoms are satisfied there.
Hence, the required formula unit is CaS(aq) + FeBr₂(s) → FeS(s) + CaBr₂(aq).
To know more about chemical reactions, visit the below link:
brainly.com/question/26018275
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