Answer
Verified
451.2k+ views
Hint: The regulation of preservation of mass or principle of mass conservation defines that for any system which is closed to all transfers of count number and energy, then the mass of the device have to remain steady through the years, because the machine's mass cannot exchange, so quantity can neither be added nor be removed.
Complete step by step solution:
Giving the law of conservation of mass, mass can neither be created nor be destroyed. Therefore the mass of products has to be equal to the mass of reactants. The quantity of atoms of every detail needs to be identical on reactant and product aspect. Thus chemical equations are balanced.
The balanced equation for combustion of ethanol at $298K$ is
${C_2}{H_5}OH(l) + 3{O_2}(g) \to 2C{O_2}(g) + 3{H_2}O(l)$
$\Delta {n_g}$ is the change in number of moles of gas particles given below:
${n_{products}} - {n_{reactants}} = 2 - 3 = - 1$
So , the value of $\Delta {n_g}$ is if we consider the burning of one mol of liquid ethanol if reactants and products are at $298K$ is $ - 1$.
So, the correct answer is A.
Additional information:
The Law of Conservation of Mass periods from Antoine Lavoisier's $1789$ detection that mass is neither produced nor ruined in the chemical reactions. In different phrases, the mass of anyone element at the start of a response will be the same as the mass of that element at the give up of the response.
Note:
The idea of mass conservation is broadly used in many fields which comprise the chemistry, mechanics, and liquid dynamics. Historically, mass conservation became tested in chemical reactions independently by way of Mikhail Lomonosov and later rediscovered through Antoine Lavoisier inside the overdue eighteenth century. The formulation of this regulation became of vital significance within the development from alchemy to the modern-day natural science of chemistry.
Complete step by step solution:
Giving the law of conservation of mass, mass can neither be created nor be destroyed. Therefore the mass of products has to be equal to the mass of reactants. The quantity of atoms of every detail needs to be identical on reactant and product aspect. Thus chemical equations are balanced.
The balanced equation for combustion of ethanol at $298K$ is
${C_2}{H_5}OH(l) + 3{O_2}(g) \to 2C{O_2}(g) + 3{H_2}O(l)$
$\Delta {n_g}$ is the change in number of moles of gas particles given below:
${n_{products}} - {n_{reactants}} = 2 - 3 = - 1$
So , the value of $\Delta {n_g}$ is if we consider the burning of one mol of liquid ethanol if reactants and products are at $298K$ is $ - 1$.
So, the correct answer is A.
Additional information:
The Law of Conservation of Mass periods from Antoine Lavoisier's $1789$ detection that mass is neither produced nor ruined in the chemical reactions. In different phrases, the mass of anyone element at the start of a response will be the same as the mass of that element at the give up of the response.
Note:
The idea of mass conservation is broadly used in many fields which comprise the chemistry, mechanics, and liquid dynamics. Historically, mass conservation became tested in chemical reactions independently by way of Mikhail Lomonosov and later rediscovered through Antoine Lavoisier inside the overdue eighteenth century. The formulation of this regulation became of vital significance within the development from alchemy to the modern-day natural science of chemistry.
Recently Updated Pages
Fill in the blanks with suitable prepositions Break class 10 english CBSE
Fill in the blanks with suitable articles Tribune is class 10 english CBSE
Rearrange the following words and phrases to form a class 10 english CBSE
Select the opposite of the given word Permit aGive class 10 english CBSE
Fill in the blank with the most appropriate option class 10 english CBSE
Some places have oneline notices Which option is a class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
Which are the Top 10 Largest Countries of the World?
What is the definite integral of zero a constant b class 12 maths CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Define the term system surroundings open system closed class 11 chemistry CBSE
Full Form of IASDMIPSIFSIRSPOLICE class 7 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE