Write the rate expression for the following reaction. H2+1/2 O2 arrow H2O
1 answer:
Answer:
Explanation:
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In this case, according to the chemical reaction:
H2 + 1/2 O2 --> H2O
Since both hydrogen and oxygen are the reactants and the rate laws are written in terms of the concentration of reactants and the rate constant, we obtain:
Whereas the negative sign represents the consumption of those reactants and the power 1/2 the stoichiometric coefficient of oxygen in the reaction.
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Answer: B) an oxygen atom in a different molecule.
Explanation:
Hydrogen bonding (H-bonding) is an inter molecular force having partial ionic-covalent character.
H-bonding takes place between a hydrogen atom attached with an electronegative atom such as O, N and F and an electronegative atom such as O,N and F. They are strong forces.
Example: has hydrogen bonding between hydrogen of one molecule with oxygen atom bonded to hydrogen of different molecule.
Thus the correct option is hydrogen bonding occurs between the hydrogen atom in one molecule and an oxygen atom in a different molecule.
The correct answer is option E.
Explanation:
The pH of the solution is defined as negative logarithm of hydrogen ions concentration in a solution. Mathematically written as:
The pOH of the solution is defined as negative logarithm of hydroxide ions concentration in a solution. Mathematically written as:
The sum of ph and pOH is equal to 14.
pH + pOH = 14
A solution has a pH of 4.20.
Hence, the correct answer is option E.