[lidilidi]

Heyy all i have some problems to solve and i really have no idea how. I will be really thankful if you can help me

2. In a closed vessel reactor (10L) COCl2 was introduced and  T= 800 C. When the following equilibrium is reached

COCl2(g) -> CO(g) + Cl2(g)

Ptotal = 7.40 atm and the formation of 10.4 g Cl2 was observed. Calculate the dissociation grade nad Kp

3. Calculate the volume of HNO3 65%w (d=1.40 g\mL) to be added to H2O to obtain 0.5 L of a 2M HNO3 solution. Calculate the pH of the final solution before and after the addition of 40g of NaOH
4. 200 mL of 0.1M aqueous solution of HCl have been added to 500mL of 0.1M aqueous solution of NH3 at T=25C. Calculate:
a) pH of the initial NH3 solution
b) pH of the final solution (kp=1.6x10^-5)

Thank you in advance

[Borek]

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