What is Ką for H3BO3(aq) = H+(aq) + H2B03 (aq)?

Answer : The expression for acid dissociation constant will be:

Explanation :

Acid dissociation constant : It is an equilibrium constant that refers to the dissociation or ionization of an acid.

It is denoted as .

The given equilibrium reaction is:

The expression for acid dissociation constant will be:

option c: 1605.1 kj

the balanced chemical reaction for combustion of methane is as follows:

here, enthalpy formation of is -74.7 kj/mol, 0 kj/mol, -393.5 kj/mol and -241.82 kj/mol respectively.

the heat released or can be calculated as follow:

putting the values,

thus, heat released by combustion of 1 mol of methane is 802.54 kj/mol. thus, for 2 mol, heat released will be:

therefore, heat released by the combustion of 2 mol of methane is 1605.1 kj.