1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vodka [1.7K]
2 years ago
12

How many grams of neutral salt will be obtained in the reaction of calcium oxide with 200 cm 3 of phosphoric acid solution whose

concentration is 0.3 mol / dm 3
Chemistry
1 answer:
katen-ka-za [31]2 years ago
6 0

Answer:

9.3 g of Ca3(PO4)2

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O

Next, we shall determine the number of mole of H3PO4 present in 200 cm³ of 0.3 mol/dm³ phosphoric acid (H3PO4) solution. This can be obtained as follow:

Molarity of H3PO4 = 0.3 mol/dm³

Volume = 200 cm³ = 200 cm³/1000 = 0.2 dm³

Mole of H3PO4 =?

Molarity = mole /Volume

0.3 = mole of H3PO4 /0.2

Cross multiply

Mole of H3PO4 = 0.3 × 0.2

Mole of H3PO4 = 0.06 mole

Next, we shall determine the number of mole of the salt, Ca3(PO4)2, obtained from the reaction. This can be obtained as shown below:

3CaO + 2H3PO4 —> Ca3(PO4)2 + 3H2O

From the balanced equation above,

2 moles of H3PO4 reacted to produced 1 mole of Ca3(PO4)2.

Therefore, 0.06 moles of H3PO4 will react to produce = (0.06 × 1)/2 = 0.03 mole of Ca3(PO4)2.

Thus, 0.03 mole of Ca3(PO4)2 is produced from the reaction.

Finally, we shall determine the mass of Ca3(PO4)2 produced as follow:

Mole of Ca3(PO4)2 = 0.03 mole

Molar mass of Ca3(PO4)2 = (40×3) + 2[31 + (16×4)]

= 120 + 2[31 + 64]

= 120 + 2[95]

= 120 + 190

= 310 g/mol

Mass of Ca3(PO4)2 =?

Mole = mass /Molar mass

0.03 = mass of Ca3(PO4)2 / 310

Cross multiply

Mass of Ca3(PO4)2 = 0.03 × 310

Mass of Ca3(PO4)2 = 9.3 g

Thus, 9.3 g of Ca3(PO4)2 was obtained from the reaction.

You might be interested in
How many molecules does 1 mole of O2 gas have?
raketka [301]

Answer:

d.6.02×1023 molcules

3 0
2 years ago
Read 2 more answers
Driving cars lowers the pH of the oceans by _______.
Naddika [18.5K]
A) releasing CO2 that dissolves and forms acid in the oceans (i think i'm sorry if its wrong)
6 0
3 years ago
Read 2 more answers
How might society have been most likely impacted if Nikola Tesla, the inventor of AC technology, had not become a scientist?
Nonamiya [84]
Cars might not be as insulated and as safe  because of the need to get cooler air into the vehicle, and im not fully sure but refrigerators would still run on ice to cool food. Houses wouldnt be as insulated from heat so when winter came around you would be colder than normal  <span />
6 0
3 years ago
Read 2 more answers
Which rules are violated in the following electronic configuration 1s2 2s3​
aalyn [17]
There is no element in 2s3
5 0
3 years ago
Gina made a poster for plastic recycling week and included this information on her poster:
Aloiza [94]

Answer:

Gina Should Put Rubber Tires Under The  Synthetic Category

Gina Should Put Starch Under The Natural Category

Explanation:

Edge 2020

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these reasons did you include in your<br> response? Check all of the boxes that apply.
    9·2 answers
  • A little aluminum boat (mass of 14.50
    5·1 answer
  • Type the correct answer in the box.
    5·1 answer
  • True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.
    5·2 answers
  • Why could the Bohr model not predict line spectra for atoms other than hydrogen?
    10·1 answer
  • Both pyrrole and pyridine are aromatic compounds, and undergo electrophilic aromatic substitution (EAS). Using a resonance argum
    11·1 answer
  • Consider a sample that is a mixture composed of biphenyl, benzoic acid, and benzyl alcohol. The sample is spotted on a TLC plate
    13·1 answer
  • ice _______________ - a collective term for several mechanical weathering processes induced by stresses created by the freezing
    5·1 answer
  • 1. A volume of 120.0 liters of a gas is prepared at a pressure of 400.0 mm Hg and a temperature
    5·1 answer
  • What term is best described as the rate of a chemical reaction at any instant in time?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!