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Radda [10]
2 years ago
13

Barium oxalate is used as a colorant to produce the green color in fireworks. Imagine that you have been assigned to prepare bar

ium oxalate by reacting barium hydroxide octahydrate (Ba(OH)2·8H2O) with oxalic acid dihydrate (H2C2O4·2H2O). Find the number of grams of oxalic acid dihydrate that would be required to completely react with 5.3 g of barium hydroxide octahydrate. Use correct significant figures. Do not include a unit with your answer or it will be counted wrong.
H2C2O4·2H2O 126.07 g/mol
H2C2O4 90.03 g/mol
Ba(OH)2·8H2O 315.46 g/mol
Ba(OH)2 171.34 g/mol
Chemistry
1 answer:
JulsSmile [24]2 years ago
5 0

Answer:

2.1

Explanation:

Calculation of moles of Ba(OH)_2.8H_2O

Mass of copper = 5.3 g

Molar mass of copper = 315.46 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{5.3\ g}{315.46\ g/mol}

Moles of Ba(OH)_2.8H_2O = 0.0168 moles

According to the reaction,

Ba(OH)_2.8H_2O + H_2C_2O_4.2H_2O\rightarrow BaC_2O_4 + 12 H_2O

1 mole of Ba(OH)_2.8H_2O react with 1 mole of  H_2C_2O_4.2H_2O

0.0168 moles of Ba(OH)_2.8H_2O react with 0.0168 moles of  H_2C_2O_4.2H_2O

Moles of H_2C_2O_4.2H_2O = 0.0168 moles

Molar mass of H_2C_2O_4.2H_2O = 126.07 g/mol

Thus,

<u>Mass = Moles * Molar mass = 0.0168 moles * 126.07 g/mol = 2.1 g</u>

<u>Answer - 2.1</u>

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Explanation:

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