Understanding Equivalent Weight in Acid-Base Chemistry The amount of hydrogen ions transferred in acid-base reactions will give the equivalent weight of that acid. For example, sulfuric acid, H2SO4, with two H+ ions has an n (number of equivalents) of 2, while hydrochloric acid, HCl, with one H+ ion has an equivalent weight of 1.
The table below gives the density (kg/L) and the corresponding concentration (% weight) of Hydrochloric Acid (HCl) solutions in water at different temperatures in degrees centigrade (°C). The table was taken from "Perry's Chemical Engineers' Handbook" by Robert H. Perry, Don Green, Sixth Edition with supplemental data provided by the Solvay
Place 110 ml of 28% HCl in a container and add enough water to make 1 L. This mixture will be a 1N concentration of HCl. In this example, 28% is used as the strength of HCl purchased. However, if the concentration of the HCl you purchase is different, divide 30.78 ml by the percent concentration of the HCl.
It's a calorimetry calculation. Here's how you do it. EXAMPLE When 25.0 mL of 0.700 mol/L NaOH was mixed in a calorimeter with 25.0 mL of 0.700 mol/L HCl, both initially at 20.0 °C, the temperature increased to 22.1 °C. The heat capacity of the calorimeter is 279 J/°C. What is the molar enthalpy of neutralization per mole of HCl? Solution The equation for the reaction is NaOH + HCl → NaCl
PART II: Solution preparation. Step 4: Transfer 918 ml water in a beaker/volumetric flask/measuring cylinder. Add 82 ml of 37% concentrated hydrochloric acid stock solution and mix it to prepare a homogeneous solution.Note: In case you have not calculated the amount of water to be added, just take ≈ 500 ml water in a volumetric flask
V 1 is the volume to be removed (i.e., aliquoted) from the concentrated stock solution. C 2 is the final concentration of the diluted solution. V 2 is the final volume of the diluted solution. This is the volume that results after V 1 from the stock solution has been diluted with diluent to achieve a total diluted volume of V 2.
This means a 37% (w/w) Hydrochloric acid contains 37 g of HCl per 100 g of solution. The density of 37% (w/w) Hydrochloric acid solution is 1.2 g/ml at 25° C. This means the weight of the 1 ml of the hydrochloric acid solution is 1.2 g at 25°C. Molarity refers to the number of moles of the solute present in 1 liter of solution.
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what is 1 n hcl
