Which of the following statements is true about what happens during a chemical reaction?
2 answers:
Answer: The correct option is A.
Explanation: In a chemical reaction, reactants react to form a number of products.
For the formation of products, the bonds of the individual reactants must be broken and the bonds of the products must be formed.
For example: Formation of water from hydrogen gas and oxygen gas. Reaction follows:
The Bonds of hydrogen and oxygen molecule are broken and new bonds between hydrogen and oxygen atoms are formed to give water molecule.
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Answer:
The volume of gas is 58.22 L which will occupy at 250.°C and 680 mm Hg pressure.
Explanation:
Given:
Temperature = 27°C
To make it into kelvin = 27+273
= 300K
Pressure =740mm Hg
to make it in atm. =
= 0.973atm
n = 2.3 moles
Volume of gas =?
As we know according to the formula
PV = nRT
On substituting the values
=
= 58.22 L
Therefore, 58.22L volume of gas will occupy at 250.°C and 680 mm Hg pressure.