An aqueous solution of Ca(OH)2with a concentration of 0.146 M was used to titrate 25.00 mL of aqueous HCl. 12.03 mL of the Ca(OH)2was required to reach the endpoint of the titration. a. How many moles of base were required to react completely with the acid in this reaction? b. How many moles of HCl were present in the original 25.00 mL of acid? c. What is the molarity of the original HCl solution?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
1. An aqueous solution of Ca(OH)2with a concentration of 0.146 M was used to titrate 25.00 mL of aqueous HCl. 12.03 mL of the Ca(OH)2was required to reach the endpoint of the titration.
a. How many moles of base were required to react completely with the acid in this reaction?
b. How many moles of HCl were present in the original 25.00 mL of acid?
c. What is the molarity of the original HCl solution?
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