A certain diprotic acid H2X is a strong acid in its first deprotonation and a weak acid in its second deprotonation. A solution of H2X that is initially 0.020 M has a pH of 1.66. What is the value of Ka2for this acid

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

it's filtration, but this is an assumption so my apologies if i got this

1.solid

2.carbon dioxide

3.helium

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.