Which of the following would not be soluble in an aqueous solution?

PbCl2

Ca(NO3)2

K2S

AlPO4

The answer to your question is PbCl₂, K₂S, AlPO₄

Explanation:

PbCl₂       This compound is not soluble because it has Pb

Ca(NO₃)₂  Nitrates are soluble

K₂S            Sulfur is not soluble in water

AlPO₄       Phosphates are not soluble in water

The only compound that is soluble is water is Ca(NO₃)₂

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 :