91. Define Ionic product of water. What is its value?
The product concentrations H+ and OH- in pure water are in aqueous solutions at a given temperature is known as Ionic Product of water. Its value is 1.0 * 10-14 moles2 / litre2.
92. What is PH? What are the units of PH?
PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution.
PH of buffer solution is calculated by.
Henderson’s equation
Name the best indicator
Phenolphthalein, PH range 8.3 to 10.0
Chemical kinetics deals with study of.
Rates and mechanisms of chemical and Biochemical reactions
93. What does Thermodynamics helps in predicting?
Predicting the feasibility of reaction and does not indicate the rate of chemical reaction
94. What does the expression –dc/dt indicates?
Rate of reaction can be expressed as –dc/dt where dc is small decreasing concentration in time dt seconds, (-) sign indicates that the concentration decreases with time.
For every 10 degrees rise of temperature, the rate of reaction is generally.
Doubled
94. Which equation gives the relation between specific rate (k) and Temperature?
Arrhenius equation K = Ae-E a / R T
In some reactions, Rate of reaction is directly proportional to.
Concentration of catalyst
Catalyst used in Bio-Chemical reactions is called.
Enzymes
Reactions catalyzed by light are called as.
Photo catalyzed or Photosensitised reactions
Define order of reaction
The order of reaction is the number of moles whose concentrations determine the rate of a reaction at a given temperature
Give the integrated equation for first order reaction.
K = (2.303 / t) * log (a / a-x)
Rate equation of first order reaction is.
dx/dt = K * (a-x)
where ‘a’ is the initial concentration of reactants
‘x’ is the amount reacted in time t seconds
95. What is Threshold energy?
The minimum amount of energy required for the reaction to takes place is called threshold energy.
96. What is activation energy?
The difference between Threshold energy and average energy of the molecules is called activation energy.
Ina chemical reaction lowers the rate of reaction the greater will be.
The activation energy
97. How do you define the molecularity of a reaction?
The number of species participating in the slowest step of the reaction is called molecularity of the reaction.
Define Equilibrium state
The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state.
In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color
Pressure, Temperature, density, color
98. Who proposed law of mass action? What does it states?
Laws of mass action were proposed by Gulberg and Waage. The rate of chemical reaction is directly proportional to the product of the active masses of the reactants (molar concentrations of the reactants)
99. What is Kc?
Kc is the equilibrium constants when the concentrations are expressed in moles/litre
Kc = product of concentrate ions of products / product of concentrate ions of reactants
Mole fraction of the gas X total pressure gives.
Partial pressure of a gas
100. The expression q=delta (E)-W is? What does it states?
1st law of thermodynamics may be represented as q= E-W
According to this law the energy can neither be created nor destroyed, but can be converted into one form to another.
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The product concentrations H+ and OH- in pure water are in aqueous solutions at a given temperature is known as Ionic Product of water. Its value is 1.0 * 10-14 moles2 / litre2.
92. What is PH? What are the units of PH?
PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution.
PH of buffer solution is calculated by.
Henderson’s equation
Name the best indicator
Phenolphthalein, PH range 8.3 to 10.0
Chemical kinetics deals with study of.
Rates and mechanisms of chemical and Biochemical reactions
93. What does Thermodynamics helps in predicting?
Predicting the feasibility of reaction and does not indicate the rate of chemical reaction
94. What does the expression –dc/dt indicates?
Rate of reaction can be expressed as –dc/dt where dc is small decreasing concentration in time dt seconds, (-) sign indicates that the concentration decreases with time.
For every 10 degrees rise of temperature, the rate of reaction is generally.
Doubled
94. Which equation gives the relation between specific rate (k) and Temperature?
Arrhenius equation K = Ae-E a / R T
In some reactions, Rate of reaction is directly proportional to.
Concentration of catalyst
Catalyst used in Bio-Chemical reactions is called.
Enzymes
Reactions catalyzed by light are called as.
Photo catalyzed or Photosensitised reactions
Define order of reaction
The order of reaction is the number of moles whose concentrations determine the rate of a reaction at a given temperature
Give the integrated equation for first order reaction.
K = (2.303 / t) * log (a / a-x)
Rate equation of first order reaction is.
dx/dt = K * (a-x)
where ‘a’ is the initial concentration of reactants
‘x’ is the amount reacted in time t seconds
95. What is Threshold energy?
The minimum amount of energy required for the reaction to takes place is called threshold energy.
96. What is activation energy?
The difference between Threshold energy and average energy of the molecules is called activation energy.
Ina chemical reaction lowers the rate of reaction the greater will be.
The activation energy
97. How do you define the molecularity of a reaction?
The number of species participating in the slowest step of the reaction is called molecularity of the reaction.
Define Equilibrium state
The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state.
In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color
Pressure, Temperature, density, color
98. Who proposed law of mass action? What does it states?
Laws of mass action were proposed by Gulberg and Waage. The rate of chemical reaction is directly proportional to the product of the active masses of the reactants (molar concentrations of the reactants)
99. What is Kc?
Kc is the equilibrium constants when the concentrations are expressed in moles/litre
Kc = product of concentrate ions of products / product of concentrate ions of reactants
Mole fraction of the gas X total pressure gives.
Partial pressure of a gas
100. The expression q=delta (E)-W is? What does it states?
1st law of thermodynamics may be represented as q= E-W
According to this law the energy can neither be created nor destroyed, but can be converted into one form to another.
More Questions & Answers:-
Page1 Page2 Page3 Page4 Page5 Page6 Page7 Page8 Page9
Page10 Page11
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ReplyDeleteI was cured of HPV with the use of pure natural roots and herbs from a herbal professional maker called dr Moses Buba, a man of trust and always reliable to his word. I actually thank you cause at first I doubt what others do, but you make me believe that good people still live . You can reach via email buba.herbalmiraclemedicine@gmail.com or WhatsApp him +234906059305 for more information you can reach me also on my cell phone with text or WhatsApp and even drop a call on 0(501)9914802 . am grateful to share his work so I will share more about Dr Moses buba