CH-2140
Concentration
Chemistry · Secondary 4 · Hard · Concentration
A student titrates 25.0 cm³ of 0.200 mol/dm³ hydrochloric acid with sodium hydroxide solution. The neutralisation reaction is
HCl + NaOH → NaCl + H₂O.
If 20.0 cm³ of NaOH is required to reach the end‑point, what is the concentration of the NaOH solution?
HCl + NaOH → NaCl + H₂O.
If 20.0 cm³ of NaOH is required to reach the end‑point, what is the concentration of the NaOH solution?
- 0.125 mol/dm³
- 0.200 mol/dm³
- 0.250 mol/dm³
- 0.400 mol/dm³
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