A student reacts 50.0cm^3 of 2.00mol dm^-3 HCl with 25.0cm^3 NaOH. What is the concentration of NaOH?
n(HCl) = 0.05 dm^3 x 2 mol dm^-3 = 0.1 mol
Ratio HCl : NaOH = 1 : 1 = 0.1 mol : 0.1 mol
c(NaOH) = 0.1 mol / 0.025 dm^3 = 0.4 mol dm^-3
SW
Related Chemistry A Level answers
All answers ▸How do you decide what the sign of the enthalpy change should be?
Back in 1950s, it was common to have as house cleaning items bleaching solution (containing sodium hypochlorite) and ammonia (used to remove, for example, hair dye stains). However, many people ended up in hospital after using them both, why?
Why are complex ions containing transition elements coloured?
Compare the basic ability between ammonia, ethyl amine and phenyl amine.