Chemistry-
General
Easy
Question
Identify the correct order of reactivity in electrophilic substitution reactions of the following compounds-
1) 
2) 
3) 
4) 
- 1>2>3>4
- 4>3>2>1
- 2>1>3>4
- 2>3>1>4
The correct answer is: 2>1>3>4
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Oxidation of metals is generally a slow electrochemical reaction involving many steps. These steps involve
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where f = x / T,
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For the oxidation of a particular metal, a graph is shown in the figure.
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electron transfer reactions. A particular type of oxidation involve overall first order kinetics with respect to fraction of unoxidized metal surface thickness (1ñf) relative to the maximum thickness (T) of oxidized surface, when metal surface is exposed to air for a considerable period of time.
Rate law :
where f = x / T,
x = thickness of the oxide film at time ' t' and T= thickness of the oxide film at t =h
For the oxidation of a particular metal, a graph is shown in the figure.
The exponential variation of f with t (h)is
chemistry-General
chemistry-
Oxidation of metals is generally a slow electrochemical reaction involving many steps. These steps involve electron transfer reactions. A particular type of oxidation involve overall first order kinetics with respect to fraction of unoxidized metal surface thickness (1ñf) relative to the maximum thickness (T) of oxidized surface, when metal surface is exposed to air for a considerable period of time.
Rate law :
where f = x / T,
x = thickness of the oxide film at time ' t' and T= thickness of the oxide film at t =
For the oxidation of a particular metal, a graph is shown in the figure.
The time taken for thickness to grow 50% of Tis
Oxidation of metals is generally a slow electrochemical reaction involving many steps. These steps involve electron transfer reactions. A particular type of oxidation involve overall first order kinetics with respect to fraction of unoxidized metal surface thickness (1ñf) relative to the maximum thickness (T) of oxidized surface, when metal surface is exposed to air for a considerable period of time.
Rate law :
where f = x / T,
x = thickness of the oxide film at time ' t' and T= thickness of the oxide film at t =
For the oxidation of a particular metal, a graph is shown in the figure.
The time taken for thickness to grow 50% of Tis
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For a particular reaction at constant temperature , A(g) +2B(g) Following rate information were recorded:
On the basis of following observation give the answer of the following questions
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For a particular reaction at constant temperature , A(g) +2B(g) Following rate information were recorded:
On the basis of following observation give the answer of the following questions
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(Energy of electron in nth orbit of hydrogen like species having atomic
I) Ground state:
Lowest energy state of any atom or ion is called ground state of the atom It is n = 1.
II) Excited State :
States of atom other than the ground state are called excited states:
III) Ionisation energy (E):
Minimum energy required to move an electron from ground state to n = is called ionisation energy of the atom or ion.
i) Excitation Energy:
Energy required to move an electron from ground state of the atom to any other state of the atom is called
excitation energy of that state.
Excitation energy of 2ndstate = excitation energy of 1stexcited state = 1stexcitation energy = E2 ñ E1
ii) Binding EnergyëoríSeperationEnergy:
Energy required to move an electron from any state to n =h is called binding energy of that state. Binding energy of ground state =E. of atom or on.
The third excitation energy of a hydrogen like species is 204 eV.
If ionisation energy is 'a' eV then ionisation potential is 'a' V. Using this information, find the ionisation potential of givenspecies.
(Energy of electron in nth orbit of hydrogen like species having atomic
I) Ground state:
Lowest energy state of any atom or ion is called ground state of the atom It is n = 1.
II) Excited State :
States of atom other than the ground state are called excited states:
III) Ionisation energy (E):
Minimum energy required to move an electron from ground state to n = is called ionisation energy of the atom or ion.
i) Excitation Energy:
Energy required to move an electron from ground state of the atom to any other state of the atom is called
excitation energy of that state.
Excitation energy of 2ndstate = excitation energy of 1stexcited state = 1stexcitation energy = E2 ñ E1
ii) Binding EnergyëoríSeperationEnergy:
Energy required to move an electron from any state to n =h is called binding energy of that state. Binding energy of ground state =E. of atom or on.
The third excitation energy of a hydrogen like species is 204 eV.
If ionisation energy is 'a' eV then ionisation potential is 'a' V. Using this information, find the ionisation potential of givenspecies.
chemistry-General
chemistry-
(Energy of electron in nth orbit of hydrogen like species having atomic
I) Ground state:
Lowest energy state of any atom or ion is called ground state of the atom It is n = 1.
II) Excited State :
States of atom other than the ground state are called excited states:
III) Ionisation energy (E):
Minimum energy required to move an electron from ground state to n = is called ionisation energy of the atom or ion.
i) Excitation Energy:
Energy required to move an electron from ground state of the atom to any other state of the atom is called
excitation energy of that state.
Excitation energy of 2ndstate = excitation energy of 1stexcited state = 1stexcitation energy = E2 ñ E1
ii) Binding EnergyëoríSeperationEnergy:
Energy required to move an electron from any state to n = is called binding energy of that state. Binding energy of ground state = E. of atom or on.
The third excitation energy of a hydrogen like species is 204 eV.
What is the binding energy of e from second state in the given species?
(Energy of electron in nth orbit of hydrogen like species having atomic
I) Ground state:
Lowest energy state of any atom or ion is called ground state of the atom It is n = 1.
II) Excited State :
States of atom other than the ground state are called excited states:
III) Ionisation energy (E):
Minimum energy required to move an electron from ground state to n = is called ionisation energy of the atom or ion.
i) Excitation Energy:
Energy required to move an electron from ground state of the atom to any other state of the atom is called
excitation energy of that state.
Excitation energy of 2ndstate = excitation energy of 1stexcited state = 1stexcitation energy = E2 ñ E1
ii) Binding EnergyëoríSeperationEnergy:
Energy required to move an electron from any state to n = is called binding energy of that state. Binding energy of ground state = E. of atom or on.
The third excitation energy of a hydrogen like species is 204 eV.
What is the binding energy of e from second state in the given species?
chemistry-General
