Answered

Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Consider the following balanced equation:H₂SO4 (aq) + 2LiOH (aq) --> 2 H₂O (1) + Li₂SO4 (aq)A 33.98 mL sample of H₂SO4 is completely titrated with 18.19 mL of 1.35 M LIOH. What is the molarity of the H₂SO4?

Sagot :

1) Write the chemical equation.

[tex]H_2SO_{4(aq)}+2LiOH\rightarrow2H_2O+Li_2SO_4[/tex]

2) List the known and unknown quantities.

Sample: H2SO4

Volume: 33.98 mL.

Concentration: unknown

Titrant: LiOH

Volume: 18.19 mL = 0.01819

Concentration: 1.35 M

3) Find moles of LiOH

3.1- Set the equation

[tex]M=\frac{moles\text{ }of\text{ }solute}{liters\text{ }of\text{ }solution}[/tex]

3.2- Plug in the values

[tex]1.35\text{ }M=\frac{moles\text{ }of\text{ }solute}{0.01819\text{ }L}[/tex][tex]moles\text{ }of\text{ }solute=1.35\text{ }M*0.01819\text{ }L[/tex][tex]moles\text{ }LiOH=0.0245565[/tex]

The number of moles of LiOH in the reaction is 0.0246.

4) Find moles of H2SO4

The molar ratio between H2SO4 and LiOH is 1 mol H2SO4: 2 mol LiOH.

[tex]mol\text{ }H_2SO_4=0.0246\text{ }mol\text{ }LiOH*\frac{1\text{ }mol\text{ }H_2SO_4}{2\text{ }mol\text{ }LiOH}[/tex][tex]mol\text{ }H_2SO_4=0.01228\text{ }mol\text{ }H_2SO_4[/tex]

5) Molarity of H2SO4

Sample: H2SO4

Moles: 0.01228

Volume: 33.98 mL.

5.1- Convert mL to L.

1 L = 1000 mL

[tex]L=33.98\text{ }mL*\frac{1\text{ }L}{1000\text{ }mL}=0.03398\text{ }L[/tex]

5.2- Set the equation to find molarity.

[tex]M=\frac{moles\text{ }of\text{ }solute}{liters\text{ }of\text{ }solution}[/tex][tex]M=\frac{0.01228\text{ }mol\text{ }H_2SO_4}{0.03398\text{ }L}[/tex][tex]M=0.3614\text{ }M[/tex]

The molarity of the sample is 0.3614 M H2SO4.

Thanks for using our platform. We're always here to provide accurate and up-to-date answers to all your queries. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.