Question

Calculate the sulphate ion concentration in 0.15 m of h2 s o4

Answer 1

Answer:

MSO2−4=0.150M

Explanation:

In solution, sodium sulfate dissociates according to the following equation:

Na2SO4(s)→2Na+(aq)+SO2−4(aq)

Therefore, 1mol of Na2SO4 will give 1mol of SO2−4 and thus, the molarity of sulfate ions will be equal to that of the sodium sulfate.

MSO2−4=0.150M

However, the molarity of sodium ions is the double of that of sodium sulfate since 1mol of Na2SO4 will give 2mol of Na+:

MNa+=0.300M