Variation of equilibrium constan K with temperature is given by van't Hoff equation `InK=(Delta_(r)S^(@))/R-(Delta_(r)H^(@))/(RT)` for this equation, `(Delta_(r)H^(@))` can be evaluated if equilibrium constans `K_(1)` and `K_(2)` at two temperature `T_(1)` and `T_(2)` are known. `log(K_(2)/K_(1))=(Delta_(r)H^(@))/(2.303R)[1/T_(1)-1/T_(2)]` Select the correct statement :
A
Value of `K_(eq)` always increases with increasing temperature
B
For expthermic reaction of value of `K_(eq)` increases with decreasing in temperature
C
For endothermic reaction value of `K_(eq)` increases with decreasihng in temperature
D
For exothermic reactionslope is `(logK Vs.1//T)` negative
Text Solution
Verified by Experts
Topper's Solved these Questions
CHEMICAL EQUILIBRIUM
NARENDRA AWASTHI|Exercise Level 1 (Q.93 To Q.122)|1 Videos
CHEMICAL EQUILIBRIUM
NARENDRA AWASTHI|Exercise Level 2|1 Videos
ATOMIC STUCTURE
NARENDRA AWASTHI|Exercise level 2|1 Videos
DILUTE SOLUTION
NARENDRA AWASTHI|Exercise Level 3 - Match The Column|1 Videos
Similar Questions
Explore conceptually related problems
Write the equation which ralates th rate constants k_(1)and k_(2) at temperatures T_(1) and T_(2) of a reaction.
Activation energy (E_(a)) and rate constants (k_(1) "and" k_(2)) of a chemical reaction at two different temperatures (T_(1) "and" T_(2)) are realted by
For the reaction at 300 K A_((g)) harr V_((g)) + S_((g) . Delta_(t) H^(@) = - 30 "KJ/mol" Delta_(t)S^(@) = - 0.1 K.J. K^(-1)."mole"^(-1) What Is the value of equilibrium constant ?
Rate constant K varies with temperature by equation log K("min"^(-1))=5-((2000))/T .We can conclude that (R=8.314J"mol"^(-1)K^(-1) (or) cal "mol"^(-1)K^(-1) )
Activity of a radioactive substance is R_(t) at time t_(1) and R_(2) at time t_(2)(t_(2)gtt_(1)) . Then the ratio (R_(2))/(R_(1)) is
The rate constant K_(1) and K_(2) for two different reactions are are 10^(16)e^(-2000//T) and 10^(15)e^(-1000//T) , respectively. The temperature at which K_(1)=K_(2) is
For CaCO_(3) hArr CaO + CO_(2) , at equilibrium log K_p = 8 - (6400)/(T(k)) . Then temperature at which K_(p) = 1 ?
For a reversible reaction A underset(K_(2))overset(K_(1))(hArr) B rate constant K_(1) (forward) = 10^(15)e^(-(200)/(T)) and K_(2) (backward) = 10^(12)e^(-(200)/(T)) . What is the value of (-Delta G^(@))/(2.303 RT) ?