Question
A 100 mL solution having 0.01 moles of NaOH dissolved in
it. The pH of the solution is:Solution
To find the pH of the solution, we first need to calculate the concentration of hydroxide ions ( OH-) in the solution, since NaOH dissociates completely in water to produce OH- ions. Given that the solution contains 0.01 moles of NaOH dissolved in 100 mL of solution, we can calculate the molarity (M) of NaOH: M= moles of solute/ volume of solution in liters So, M = 0.01 moles /0.1 L= 0.1 М. Since NaOH dissociates completely, the concentration of OH ions is equal to the molarity of NaOH: [OH-] = 0.1 M Now, to find the pOH of the solution, we use the formula: POH = - log [OH-] POH = log(0.1) POH = -(-1) POH = 1 Finally, we can find the pH using the relation: pH + pOH = 14 pH = 14-pОН pH = 14-1 pH = 13
- 8, 12, 18, 27, ?
What value should come in the place of (?) in the following number series?
14, 18, ?, 43, 68, 104
5, 18, 39, 68, 105, ?
728, 737, ?, 778, 814, 863
17, 36, 65, 104, 153, ?
16, 8, 8, 12, ?, 60
196, 167, 144, ?, 108, 95
What will come in place of the question mark (?) in the following series?
325, 292, 262, 229, ?, 166
415 246 367 ? 335 310
...12, 13, 27, 82, 329, ?