Question
Asked Nov 19, 2019
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A sample of 0.0084 mol of HCl is dissolved into a solution with total volume of 1500.0 mL. Calculate the [HcO+] and the pH.

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Expert Answer

Step 1

Solution stoichiometry involves the calculation of concentration of solutions in the given conditions of volumes, moles etc.

Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to calculate the molarity of solution. The relation between moles, volume and molarity is as given below;

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Moles of solute Molarity volume of solution in L Mass of solute ing Molar mass of solute (g/mol) Moles hence: Mass of solute in g Molarity Molar mass of solute (g/mol)xvolume of solution in L

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Step 2

Moles of HCl = 0.0084 moles

Volume of HCl = 1500 mL  =  1.5  L

Substitute the values to calculate molarity: 

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Moles Molarity volume of solution in L 0.0084 moles Molarity 1.5 L Molarity 0.0056 M

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Step 3

HCl is a strong acid which ionized to give...

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>H,0*+Cl*

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