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The rate of an exothermic reactions incr...

The rate of an exothermic reactions increases with increase in temperature.

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Rate of an exothermic reaction decreases on rising temperature.
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Resistance increases with increases in temperature for

The rate of reaction increases isgnificantly with increase in temperature. Generally, rate of reactions are doubled for every 10^(@)C rise in temperature. Temperature coefficient gives us an idea about the change in the rate of a reaction for every 10^(@)C change in temperature. "Temperature coefficient" (mu) = ("Rate constant of" (T + 10)^(@)C)/("Rate constant at" T^(@)C) Arrhenius gave an equation which describes aret constant k as a function of temperature k = Ae^(-E_(a)//RT) where k is the rate constant, A is the frequency factor or pre-exponential factor, E_(a) is the activation energy, T is the temperature in kelvin, R is the universal gas constant. Equation when expressed in logarithmic form becomes log k = log A - (E_(a))/(2.303 RT) Activation energies of two reaction are E_(a) and E_(a)' with E_(a) gt E'_(a) . If the temperature of the reacting systems is increased form T_(1) to T_(2) ( k' is rate constant at higher temperature).

The rate constant of a reaction increases linearly with increase in temperature.

[A] : The rate of enzymic reaction increases with the increase in the concentration of enzyme . [R] : Enzymes are needed in large quantities .

Assertion : Rate of reaction increases with increase in temperature. Reason : Number of effective collisions increases with increase in temperature.

The rate of reaction increases with increase in activation energy.

A : Rate constant increases with temperature. R : Rate of exothermic reaction increases with temperature.

VMC MODULES ENGLISH-CHEMICAL EQUILIBRIUM-JEE Advanced (Archive)
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  3. For the reaction CO(g)+2H(2)(g)hArrCH(3)OH(g) Hydrogen gas is intr...

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  6. 0.15 mol of CO taken in a 2.5 L flask is maintained at 750 K alongwith...

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  7. A 10-fold increase in pressure on the reaction N(2)(g)+3H(2)(g) hArr...

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  8. For a gaseous reaction 2B rarr A, the equilibrium constant K(p) is ………...

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  9. The degree of dissociation is 0.4 at 400 K and 1.0 atm for the gaseous...

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  10. For the reversible reaction N(2)(g)+3H(2)(g) hArr 2NH(3)(g) at 500...

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  11. At constant temperature , the equilibrium constant (KP) for the deco...

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  12. Consider the following equilibrium in a closed container, N(2)O(4(g)...

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  13. In the reaction equilibrium N(2)O(4) hArr 2NO(2)(g) When 5 mol of ...

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  14. Ag^+ +NH3 hArr[Ag(NH3)]^+ K1=3.5xx10^-3 [Ag(NH3)]^+ +NH3 hArr[A...

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  15. The thermal dissociation of equilibrium of CaCo(3)(s) is studied under...

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  16. The % yield of ammonia as a function of time in the reaction N(2(g))+3...

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  17. The gas phase reaction 2NO(2)(g) rarr N(2)O(4)(g) is an exothermic rea...

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  18. Delta G^(@) at 500 K for substance 'S' in liquid state and gaseous st...

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  19. At a certain temperture in a 5L vessel 2 moles of carbon monoxide and ...

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  20. For the following reaction, equilibrium constant K(c) at 298 K is 1.6x...

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