The density of the hydrocarbon is 2.177 g/L. The gas is collected over water at 40.ºC and the barometric pressure is 776.2 mmHg.
1 answer:
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<u>Answer:</u> The limiting reagent in the given chemical reaction is carbon metal.
<u>Explanation:</u>
Excess reagent is defined as the reagent which is present in large amount in a chemical reaction.
Limiting reagent is defined as the reagent which is present in small amount in a chemical reaction. Formation of product depends on the limiting reagent.
To calculate the number of moles, we use the equation:
.....(1)
- <u>For sodium sulfate:</u>
Given mass of sodium sulfate = 16.29 g
Molar mass of sodium sulfate = 142 g/mol
Putting values in equation 1, we get:
- <u>For carbon:</u>
Given mass of carbon = 3.697 g
Molar mass of carbon = 12 g/mol
Putting values in equation 1, we get:
For the given chemical reaction:
By Stoichiometry of the reaction:
4 moles of carbon reacts with 1 mole of sodium sulfate
So, 0.31 moles of carbon will react with = of sodium sulfate
As, given amount of sodium sulfate is more than the required amount. So, it is considered as an excess reagent.
Thus, carbon metal is considered as a limiting reagent because it limits the formation of product.
Hence, the limiting reagent in the given chemical reaction is carbon metal.
The labeled diagram is given in the image attached.
As it can be seen from the image that freezing is when energy is removed from the system at 0 ⁰ while melting is when energy is added at 0⁰.
Also when energy is added at 100⁰C, it causes boiling while when it is removed at 100⁰C, it causes condensation.
Melting point of water is 0⁰C while boiling point is 100⁰C
