MPSC Combined 2023 GS Paper 1 — Question 61
The correct answer with a full explanation. Practice this interactively instead →
0.10M जलिय HCl द्रावणाचा pH काढण्यासाठी खालीलपैकी कोणता गणितीय संबंध वापरावा ? Which of the following mathematical relationships should be used to calculate the pH of a 0.10M aqueous HCl solution ?
a)pH = log10(1.0 x 10⁻¹)
b)pH = log10(1.0 x 10¹)
c)pH = -log10(1.0 x 10⁻¹)✓ Correct
d)pH = -log10(0.10 x 10¹)
pH is defined as the negative logarithm of hydrogen ion concentration: pH = -log10[H+]. For 0.10M HCl, [H+] = 0.10 or 1.0 x 10⁻¹ M, giving pH = -log10(1.0 x 10⁻¹).