Are P.to Users Literate?

[PolloTramaOp]

The answer : 

Let me help you solve this chemistry problem step by step.
(i) To identify compounds X and Z, let's analyze the reaction series:
Starting materials: NaCl + H2O + CO2 + NH3

This is the Solvay process for making sodium carbonate
X would be NaHCO3 (sodium bicarbonate)
Z would be Na2CO3 (sodium carbonate)

(ii) The reaction from X to Z is:
2NaHCO3 → Na2CO3 + H2O + CO2
This is a thermal decomposition reaction, indicated by the Δ (heat) symbol.
(iii) For the pH question:

Solution A: pH = 6 (slightly acidic)
Solution B: pH = 8 (slightly basic)
Solution C: pH = 9.5 (more basic)

Remember: pH is inversely related to H+ concentration

Lower pH = Higher H+ concentration
Higher pH = Lower H+ concentration

Therefore, the increasing order of H+ ion concentration would be:
C (pH 9.5) < B (pH 8) < A (pH 6)
The solution with maximum hydrogen ions would be Solution A (pH 6), as it has the lowest pH value among the three solutions.