State the "physical interpretation" of pka

pka = -logKa

Explanation:

pKa is defined as negative logarithm of dissociation constant, Ka.

Or, pka = -logKa

pKa define strength of an acid.

Higher pKa indicates lower strength of the acid or low dissociation of the acid.

Whereas lower pKa indicates higher strength of the acid or high dissociation of the acid.

pKa is also related with pH of the solution.

Higher the pKa, higher is the pH of the solution. This can be understood as:

Higher pKa means lower dissociation dissociation or low concentration of H+. Low H+ means high pH.

Relation between pKa and pH is given by Henderson-Hasselbalch equation,

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :