## Zero Order reaction rate constant

$\frac{d[R]}{dt}=-k; [R]=-kt + [R]_{0}; t_{\frac{1}{2}}=\frac{[R]_{0}}{2k}$

Riya Sood 4G
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Joined: Sat Aug 24, 2019 12:18 am

### Zero Order reaction rate constant

If the reaction is 2A--> Products and is zero order, is the rate constant still K or 2K ?

DarrenKim_1H
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Been upvoted: 1 time

### Re: Zero Order reaction rate constant

I believe it is still K

Mulin_Li_2J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

### Re: Zero Order reaction rate constant

Yes, I believe if you represent rate of the reaction using rate law, it should still be k no matter what stochiometric coefficient is in front of the reactant.

Suraj Doshi 2G
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Joined: Fri Aug 02, 2019 12:15 am

### Re: Zero Order reaction rate constant

The rate constant should still be K as none of the stoichiometric coefficients and concentrations will affect the rate of reaction.

Leila_4G
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### Re: Zero Order reaction rate constant

And what is the units for the rate constant of the zero order rxn?

Riya Sood 4G
Posts: 160
Joined: Sat Aug 24, 2019 12:18 am

### Re: Zero Order reaction rate constant

Leila_4G wrote:And what is the units for the rate constant of the zero order rxn?

The units for rate constant for a zero order reaction is mol L^-1 s^-1

Posts: 52
Joined: Thu Jul 11, 2019 12:16 am

### Re: Zero Order reaction rate constant

The rate constant, regardless of the order of the reaction will not be dependent on the coefficients of the reaction.

preyasikumar_2L
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Joined: Fri Aug 09, 2019 12:17 am

### Re: Zero Order reaction rate constant

The coefficients do not affect the rate constant, it will still be K.

smurphy1D
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Joined: Mon Nov 18, 2019 12:18 am

### Re: Zero Order reaction rate constant

if it is zero order then it is constant because anything to the 0 power is just 1