MHT CET202519 Apr 2025Morning ShiftChemistryIonic EquilibriumActual
The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it in mol~ dm ⁻³ ?
Options
- A1.97 10⁻⁴
- B1.738 10⁻⁴
- C1.84 10⁻⁴
- D1.283 10⁻⁴
Correct answer
B. 1.738 10⁻⁴
Step-by-step solution
Hydrogen ion concentration from pH The relation between pH and hydrogen ion concentration is given by pH = - ₁₀[ H ^+] . Given pH = 3.76 , the concentration is calculated as [ H ^+] = 10^ -3.76 . This evaluates to [ H ^+] 1.738 10⁻⁴ mol dm ⁻³ . Among the options, this matches choice B: 1.738 10⁻⁴ . The correct answer is B .