Câu 11: 

$C_{0_{NO_2}}= 0,3M$

$[NO_2]= 0,06M$

$\Rightarrow C_{{NO_2}_{pứ}}= 0,3-0,06= 0,24M$

$\Rightarrow [NO]= 0,24M; [O_2]= 0,12M$ 

$K_c= \frac{[NO]^2[O_2]}{[NO_2]^2}= 1,92$ 

Câu 12: 

$C_{0_{A}}= 0,5M$

$C_{0_{B}}= 0,75M$

$[C]= 0,35M$ 

$\Rightarrow C_{A pứ}= 0,175M; C_{B pứ}= 0,35M$

$\Rightarrow [A]= 0,5-0,175= 0,325M; [B]= 0,75-0,35= 0,4M$ 

$K_c= \frac{[C]^2}{[A][B]^2}= 2,356$

Câu 13: 

$v= k[A]^x[B]^y$ 

$\Rightarrow \frac{k_2}{k_1}= \frac{v_2}{v_1}$ 

$\Delta t^o= 40-15= 25^oC$ 

Ta có: $\frac{v_2}{v_1}= \frac{k_2}{k_1}= \gamma^{\frac{\Delta t}{10}}$ 

$\Leftrightarrow k_2= 4,6$ 

Câu 14:

a,

$\gamma^{\frac{\Delta t^o}{10}}= \frac{t_1}{t_2}$

$\Leftrightarrow \gamma^{\frac{453-393}{10}}= \frac{18.60}{1,5}$

$\Leftrightarrow \gamma \approx 3$ 

b,

$v_1= 25v_2$

$\gamma^{\frac{\Delta t^o}{2}}= \frac{v_1}{v_2}$

$\Leftrightarrow \gamma^{\frac{45}{10}}= 25$

$\Leftrightarrow \gamma \approx 2$