An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressu
2 answers:
Answer: The correct answer is an option(B).
Explanation:
According to Gay Lussac's Law:
" The pressure exerted by the gas is directly proportional to the temperature of the gas in Kelvins when volume is kept constant."
(Constant volume)
When an empty plastic bottle is sealed in a cool room and then moved to a very hot room. This changed the temperature of the air inside the bottle that is increase in temperature of the gas inside the sealed bottle.Since, the pressure of the gas is varies directly with temperature, pressure inside the bottle will get increased.
Hence, the correct answer is an option(B).
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And h value is constant 6.624 x 10^-34
Answer: The reaction is exothermic
The value is negative.
Heat is a product.
Explanation:
Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and for the reaction comes out to be positive.
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and for the reaction comes out to be negative.
The substances which are written on the left side of the arrow are reactants and the substances which are written on the right side of the arrow are products. Thus heat is a product.
The rate of disappearance of chlorine gas : 0.2 mol/dm³
<h3>Further explanation</h3>The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.
For reaction :
The rate reaction :
Reaction for formation CCl₄ :
<em>CH₄+4Cl₂⇒CCl₄+4HCl</em>
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From equation, rate of reaction = rate of formation CCl₄ = 0.05 mol/dm³
Rate of formation of CCl₄ = reaction rate x coefficient of CCCl₄
0.05 mol/dm³ = reaction rate x 1⇒reaction rate = 0.05 mol/dm³
The rate of disappearance of chlorine gas (Cl₂) :
Rate of disappearance of Cl₂ = reaction rate x coefficient of Cl₂
Rate of disappearance of Cl₂ = 0.05 x 4 = 0.2 mol/dm³