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MrMuchimi
2 years ago
14

According to the reaction below, how many moles of Ba3(PO4)2(s) can be produced from 115 mL of 0.218 M BaCl2(aq)? Assume that th

ere is excess Na3PO4(aq).
3 BaCl2(aq) + 2 Na3PO4(aq) → Ba3(PO4)2(s) + 6 NaCl(aq)
Chemistry
2 answers:
chubhunter [2.5K]2 years ago
5 0

Answer:

We can produce 0.00836 moles of Ba3(PO4)2

Explanation:

Step 1: Data given

Volume BaCl2 = 115 mL = 0.115 L

Molarity BaCl2 = 0.218 M

Step 2: The balanced equation

3 BaCl2(aq) + 2 Na3PO4(aq) → Ba3(PO4)2(s) + 6 NaCl(aq)

Step 3: Calculate moles BaCl2

Moles BaCl2 = molarity * volume

Moles BaCl2 = 0.218 M * 0.115 L

Moles BaCl2 = 0.02507 moles

Step 4: Calculate moles Ba3(PO4)2

For 3 moles BaCl2 we need 2 moles Na3PO4 to produce 1 mol Ba3(PO4)2 and 6 moles NaCl

For 0.02507 moles BaCl2 we'll have 0.02507/3 = 0.00836 moles

We can produce 0.00836 moles of Ba3(PO4)2

Anna71 [15]2 years ago
3 0

Answer:

0.01125 moles of Ba_3(PO_4)_2(s) can be produced from 115 mL of 0.218 M BaCl_2(aq).

Explanation:

Moles of BaCl_2 = n

Volume of the solution = 115 mL = 0.115 L ( 1 mL=0.001 L)

Molarity of the BaCl_2 solution = 0.218 M

0.218 M=\frac{n}{0.115 L}

n = 0.218\times 0.115 L=0.03379 mol

3 BaCl_2(aq) + 2Na_3PO_4(aq)\rightarrow Ba_3(PO_4)_2(s) + 6NaCl(aq)

According to reaction, 3 moles BaCl_2 gives 1 mole of Ba_3(PO_4)_2 .Then 0.03379 moles of BaCl_2 will give :

0.03379 mol\times \frac{1}{3}=0.01126 mol

0.01125 moles of Ba_3(PO_4)_2(s) can be produced from 115 mL of 0.218 M BaCl_2(aq).

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6 0
2 years ago
Nickel can be plated from aqueous solution according to the following half reaction. How long would it take (in min) to plate 29
andrey2020 [161]

Answer:

It take 3.5 *10² min

Explanation:

Step 1: Data given

Mass of the nickel = 29.6 grams

4.7A

Step 2: The balanced equation

Ni2+ (aq- +2e- → Ni(s)

Step 3: Calculate time

W = (ItA)/(n*F)

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 ⇒ I = current in coulombs per second. = 4.7

 ⇒ t = time in seconds.

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 ⇒ n = valence of dissolved metal in solution in equivalents per mole.  = 2

 ⇒ F = Faraday's constant in coulombs per equivalent. F = 96,485.309               coulombs/equivalent.

29.6 = (4.7 * t * 58.69)/(2*96485309)

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It take 3.5 *10² min

7 0
2 years ago
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8 0
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Explanation:

hope this helps!

6 0
2 years ago
Read 2 more answers
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