Answer:
The products of self-ionization of water are OH⁻ and H⁺.
Explanation:
- The water is self ionized according to the equation:
<em>H₂O → OH⁻ + H⁺.
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The ionic product for water (Kw) = [OH⁻][H⁺] = 10⁻¹⁴.
Kw is also called "self-ionization constant" or "auto-ionization constant".
Answer:
the second,third and last statement
Explanation:
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Answer:
30 kJ
Explanation:
Arrhenius equation is given by:
![k=Aexp(-Ea/RT)\\](https://tex.z-dn.net/?f=k%3DAexp%28-Ea%2FRT%29%5C%5C)
Here, k is rate constant, A is Pre-exponential factor, Ea is activation energy and T is temperature.
taking natural log of both side
ln k = ln A - Ea/RT
In Arrhenius equation, A, R and T are constant.
Therefore,
![ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}](https://tex.z-dn.net/?f=ln%5Cfrac%7Bk_2%7D%7Bk_1%7D%20%3D%5Cfrac%7BEa_1-Ea_2%7D%7BRT%7D)
is the lowering in activation energy by enzyme,
R = 8.314 J/mol.K
T = 37°C + 273.15 = 310 K
![\frac{k_2}{k_1} =1\times 10^5](https://tex.z-dn.net/?f=%5Cfrac%7Bk_2%7D%7Bk_1%7D%20%3D1%5Ctimes%2010%5E5)
![ln 1\times 10^5 =\frac{Ea_1-Ea_2}{RT}\\{Ea_1-Ea_2} = 11.512 \times 8.314 \times 310\\=29670\ J\\=30\ kJ](https://tex.z-dn.net/?f=ln%201%5Ctimes%2010%5E5%20%3D%5Cfrac%7BEa_1-Ea_2%7D%7BRT%7D%5C%5C%7BEa_1-Ea_2%7D%20%3D%2011.512%20%5Ctimes%208.314%20%5Ctimes%20310%5C%5C%3D29670%5C%20J%5C%5C%3D30%5C%20kJ)