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Recent questions tagged activation-energy

The rate constant of a reaction at 32$^\circ$C is 0.055 s$^{-1}$. If the frequency or pre-exponential factor is 1.2 $\times$ 10$^{13}$ s$^{-1}$, what is the activation energy?

asked Jul 25, 2014 by balaji.thirumalai

1 answer

If a temperature increase from 20$^\circ$C to 35$^\circ$C triples the rate constant for a reaction, what is the value of the activation barrier for the reaction?

asked Jul 25, 2014 by balaji.thirumalai

1 answer

The rate constant (k) for a reaction was determined as a function of temperature. A plot of $ln\; k$ versus $ \large\frac{1}{T}$ (in $K$) is linear and has a slope of $-1.01 \times 10^{4}\;K$. Calculate the activation energy for the reaction.

asked Jul 25, 2014 by balaji.thirumalai

1 answer

Rate of reaction increases by factor of 10 when temperature increased from $300K$ to 400K.Then find activation energy of reaction

asked Dec 18, 2013 by sreemathi.v

1 answer

For following potential energy diagram : True statement is :-

asked Dec 18, 2013 by sreemathi.v

1 answer

Consider the following reaction: $\large\frac{1}{2}$$H_2(g)+\large\frac{1}{2}$$Cl_2(g)\rightarrow HCl(g)$ $\Delta H=20KJ$.The activation energy for formation of HCl is 150KJ.Then activation energy for decomposition of HCl will be

asked Dec 18, 2013 by sreemathi.v

1 answer

Consider following potential energy graph

asked Dec 17, 2013 by sreemathi.v

1 answer

The variation of PE & KE as reactant molecules approach each other can be represented by

asked Dec 17, 2013 by sreemathi.v

1 answer

Which of following corresponds to faster reaction at room temperature? (y-axis is Potential Energy and x-axis is Progress of reaction).

asked Dec 17, 2013 by sreemathi.v

1 answer

An activated complex has

asked Dec 17, 2013 by sreemathi.v

1 answer

A first order reaction is 50% completed in 45 minute at $87^oC$ and in 9minutes at $127^oC$.The energy of activation of the reaction is

asked Dec 17, 2013 by sreemathi.v

1 answer

Select the correct statement:

asked Dec 16, 2013 by sreemathi.v

1 answer

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