7. La ecuación: NH, NCO (ac
(NH) CÓ
Es caracteristica para la obtención de urea a partir de cianato de amonio en solución acuosa.
La ecuación de velocidad es v = KINH NCOR, donde k = 0.025 L/molmin. Si se tiene una concen-
tración inicial de NH NCO de 0.325 mol/L, ¿qué tiempo se necesitará para que la concentración
disminuya a 0.220 mol/L?​

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.