Question

Calculate the grams of CaCO₃from Na₂CO₃What we know: CaCO₃:Na₂CO₃=1:1, 98.3 mL Na₂CO₃, Molar mass of CaCO₃=100.0869, Na₂CO₃has a molarity of 0.507

A) 4.95 g

B) 9.95 g

C) 14.90 g

D) 19.90 g

Answer 1

To calculate the grams of CaCO₃ from Na₂CO₃, you need to convert the volume of Na₂CO₃ to moles using its molarity, and then use the mole ratio between CaCO₃ and Na₂CO₃ to calculate the moles of CaCO₃. Finally, you can convert the moles of CaCO₃ to grams using its molar mass.

Step-by-step explanation:

To calculate the grams of CaCO₃ from Na₂CO₃, we need to use the given information. The ratio of CaCO₃ to Na₂CO₃ is 1:1, and we know the molar mass of CaCO₃ is 100.0869 g/mol. We are also given that Na₂CO₃ has a molarity of 0.507 and a volume of 98.3 mL.

To calculate the grams of CaCO₃, we need to convert the volume of Na₂CO₃ to moles using its molarity, and then use the mole ratio between CaCO₃ and Na₂CO₃ to calculate the moles of CaCO₃. Finally, we can convert the moles of CaCO₃ to grams using its molar mass.

Using these calculations, the grams of CaCO₃ from Na₂CO₃ would be approximately 14.90 g (option C).