The hydrogen ion concentration is the same as the concentration of the acid because HCl is a strong acid and dissociates as follows: HCl -> #H^+# + #Cl^-# (notice the 1:1 ratio of HCl and #H^+#) A 1M HCl solution has a pH of 0 A 0.1M HCl solution has a pH of 1 a 0.01M HCl solution has a pH of 2. This video discusses additional examples The desired solution requires (0.50 L) × (4.00 M L –1) = 2.0 mol of HCl. This quantity of HCl is contained in (2.0 mol) / (10.17 M L –1 ) = 0.197 L of the concentrated acid. So one would measure out 197 mL of the concentrated acid, and then add water to make the total volume of 500 mL. Start by pipetting 10.0 ml 0.1 N hydrochloric acid (HC1) into a flask to standardize NaOH. Add about 50 ml of water (not tap water) and three drops of methyl red indicator to the mix. Record the initial volume in a 25 ml buret filled with 0.1 N sodium hydroxide solution. Why is it critical to standardize a solution? First, calculate the number of moles of strong base required to reach the equivalence point of the titration. Then, using the mole ratio from the balanced neutralization equation, convert from moles of strong base to moles of acid. Finally, divide the number of moles of acid by the given volume of the acid solution to find the concentration. 1. Identification Product Name Hydrochloric acid solution, 1N Cat No. : SA48-1; SA48-1LC; SA48-4; SA48-20; SA48-20LC; SA48-200; SA48-500; XXSA48PD200LI; NC1278766 Synonyms Muriatic acid solution; Hydrogen chloride solution Recommended Use Laboratory chemicals. Uses advised against Food, drug, pesticide or biocidal product use. Hydrochloric acid solution volumetric, 0.1 M HCl (0.1N), endotoxin free; CAS Number: 7647-01-0; Synonyms: Hydrogen chloride solution; find Supelco-2104 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich BvliH.

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