harris435942
31.05.2021 •
Chemistry
If I receive links for an answer you will be reported. For me this is due today at 11:59 and I really need help please. I asked this question before but received no answer.
NaOH + AlCl3 --> Al(OH)3 + NaCI.
How many grams of AlCl3 are needed to produce 100.0 g NaCl?
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Ответ:
76.1g
Explanation:
The balanced equation for this reaction is as follows:
3NaOH + AlCl3 --> Al(OH)3 + 3NaCI
From the above equation, it can be observed that 1 mole of AlCl3 is needed to produce 3 moles of NaCl.
Using the formula below, we convert the mass of NaCl to moles;
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
mole = 100/58.5
mole = 1.71mol of NaCl
Since 1 mole of AlCl3 is needed to produce 3 moles of NaCl.
Then 1.71 moles of NaCl will be produced by 1.71/3 = 0.57mol of AlCl3
Molar mass of AlCl3 = 27 + 35.5(3)
= 27 + 106.5
= 133.5g/mol
Mole = mass/molar mass
Mass = molar mass × mole
Mass = 133.5 × 0.57
Mass = 76.1g
Ответ:
Letter D
Hope that helps. -UF aka Nadoa