Answered

Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Discover precise answers to your questions from a wide range of experts on our user-friendly Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

What mass of precipitate (in g) is formed when 45.5 mL of 0.300 M Na3PO4 react with 42.5mL of 0.200 M Cr(NO3)3 in the following chemical reaction?
Na3PO4(aq)+ Cr(NO3)3(aq) -> CrPO4(s) +3NaNO3(aq)

Sagot :

Eduard22sly

The mass of the precipitate, CrPO₄ formed when 45.5 mL of 0.300 M Na₃PO₄ react with 42.5mL of 0.200 M Cr(NO3)₃ is 1.25 g

We'll begin by calculating the number of mole of Na₃PO₄ and Cr(NO3)₃ present in the solution.

For Na₃PO₄

Molarity of Na₃PO₄ = 0.3 M

Volume = 45.5 mL = 45.5 / 1000 = 0.0455 L

Mole of Na₃PO₄ =?

Mole = Molarity × Volume

Mole of Na₃PO₄ = 0.3 × 0.0455

Mole of Na₃PO₄ = 0.01365 mole

For Cr(NO3)₃

Molarity of Cr(NO3)₃  = 0.2 M

Volume = 42.5 mL = 42.5 / 1000 = 0.0425 L

Mole of Cr(NO3)₃ =?

Mole = Molarity × Volume

Mole of Cr(NO3)₃ = 0.2 × 0.0425

Mole of Cr(NO3)₃ = 0.0085 mole

Next, we shall determine the limiting reactant.

Na₃PO₄(aq) + Cr(NO₃)₃(aq) —> CrPO₄(s) + 3NaNO₃(aq)

1 mole       :      1 mole

0.01365    :      0.0085 mole

Thus, Cr(NO₃)₃ is the limiting reactant.

Next, we shall determine the number of mole of CrPO₄ produced from the reaction.

From the balanced equation above,

1 mole of Cr(NO₃)₃ reacted to produce 1 mole of CrPO₄.

Therefore,

0.0085 mole of Cr(NO₃)₃ will also react to produce 0.0085 mole of CrPO₄.

Finally, we shall determine the mass of 0.0085 mole of CrPO₄.

Mole of CrPO₄ = 0.0085 mole

Molar mass of CrPO₄ = 52 + 31 + (16×4)

= 52 + 31 + 64

= 147 g/mol

Mass of CrPO₄ =?

Mass = mole × molar mass

Mass of CrPO₄ = 0.0085 × 147

Mass of CrPO₄ = 1.25 g

Therefore, the mass of the precipitate, CrPO₄ formed is 1.25 g

Learn more: https://brainly.com/question/9945440

Thanks for using our platform. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.