Question

An aqueous solution of hydrochloric acid is standardized by titration with a 0.113 M solution of calcium hydroxide. If 11.3 mL of base are required to neutralize 10.0 mL of the acid, what is the molarity of the hydrochloric acid solution? M hydrochloric acid

Answer 1

Balanced reaction : Cach + 2H₂O · CaOHI, + 2HCl - Hot acid M₂ ? Ca(OH, bare m = 0.113m V = 11. 3ml no Coefficient of Ca(OH)2 V 10.0m2 n, Cock Acies 3 H ny - 2 Inel for neutralization : M₂ Vz a mvL =) miun - M. - M₂ - (0.113M) (11.3 mL) (2) (11610.0mL) = 0.255 M² M₂ 10.255M hydrochloric aud

Balanced Ca(OH)2 reaction + 2HCl equation: Cach + 2H₂O رامی Ca(ou ba m = ? V = 19.7m. n = Coefficient n =1 HCL acid My = 0.101M = 22-1 mL ng = coefficient of her = 2 of Calor Ca(OH2 For neutralization : n, Mvi - M₂ V = M = Mr z ni nu => M = (0.101M) (22. IML) cu (2) (19.7mL) = M = 0.0564m. 10.0564 M Calcium hydeoxide