What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants
2 answers:
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<u>Answer:</u> The combination of element ad an ion that will react is
<u>Explanation:</u>
Oxidation reaction is defined as the reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.
Reduction reaction is defined as the reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.
The substance having highest positive potential will always get reduced and will undergo reduction reaction.
For a reaction to be spontaneous, the standard electrode potential must be positive.
To calculate the of the reaction, we use the equation:
......(1)
For the given options:
- <u>Option 1:</u>
Here, tin must undergo oxidation reaction and manganese undergo reduction reaction.
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u>
Putting values in equation 1, we get:
As, the standard potential is coming out to be negative, the given reaction will not take place.
- <u>Option 2:</u>
Here, iron must undergo oxidation reaction and calcium undergo reduction reaction.
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u>
Putting values in equation 1, we get:
As, the standard potential is coming out to be negative, the given reaction will not take place.
- <u>Option 3:</u>
Here, nickel must undergo oxidation reaction and platinum undergo reduction reaction.
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u>
Putting values in equation 1, we get:
As, the standard potential is coming out to be positive, the given reaction will take place.
- <u>Option 4:</u>
Here, hydrogen must undergo oxidation reaction and sodium undergo reduction reaction.
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u>
Putting values in equation 1, we get:
As, the standard potential is coming out to be negative, the given reaction will not take place.
Hence, the combination of element ad an ion that will react is
Answer:
0.329 g
Explanation:
In the context of this problem, we have a chemical reaction between hydrochloric acid and calcium hydroxide. HCl is the acid here and calcium hydroxide is the base. Hence, we have an acid-base reaction, also known as neutralization reaction.
In a neutralization reaction, water is produced as a product, as well as a salt that we obtain after we exchange the cations: calcium bonds to chloride and hydrogen bonds to hydroxide (the latter is the formation of water). This means we also produce calcium chloride as a product. The overall reaction represents this as:
Firslt of all, we wish to find the number of moles of HCl present. Having molarity and volume, this is done by applying the molarity formula. It states that molarity is equal to the rate between moles and volume:
Rearranging for moles of HCl, n:
Based on stoichiometry of the balanced chemical equation, notice that 1 mole of calcium hydroxide reacts with 2 moles of HCl, meaning:
Now that we have the expression for moles, we may also express moles of calcium hydroxide as the ratio between its mass and molar mass:
Using the last two equations, we see that:
Substitute the given data, as well as the molar mass of calcium hydroxide: