.02g of CaCO3 in 1 liter of H2O. How many moles of CaCO3 are there? How many moles of Ca? How many grams of Ca in solution?

Chemistry

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12 Dec 2019

.02g of CaCO₃ in 1 liter of H₂O.

How many moles of CaCO₃ are there?

How many moles of Ca?

How many grams of Ca in solution?

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Casey DurganLv2

13 Dec 2019

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Related questions

1 A .5118 g sample of CaCO3 is disolve in concentrated HCl(12M). the solution was diluted to 250 mL in a volumetric flask toobtain a solution for standardizing the EDTA titrant.

a How many moles of CaCO3 are used (MW=100.1)? .0051mol

b What is the molarity of the Ca2+ (calcium ion) in the 250mL ofsolution? .020M
c How many moles of Ca2+ are in a 25 mL aliquot of the solution inpart b? .0005 mol

2. 25.00 mL aliquots of the solution from Part 1 are titratedwith EDTA to the Eriochrome Black T end point. A blank containing asmall measured amount of Mg2+ requires 2.60 mL of the EDTA to reachthe end point. An aliquot to which the same amount of Mg2+ is addedrequires 28.55 mL of the EDTA to reach the end point.

How many milliliters of EDTA are needed to titrate the Ca+2 ion inthe aliquot? 27.56mL

How many moles of EDTA are there in the volume obtained in theprevious question? .0051mol

What is the molarity of the EDTA solution? 0.185M

3. A 100.0 mL sample of hard water is titrated with theEDTA solution from Part 2. The same amount of Mg2+ is added aspreviously, and the volume of EDTA required is 22.44mL

What volume of EDTA is used in titrating the Ca2+ in thehard water?

How many moles of EDTA are there in thatvolume?

How many moles of Ca2+ are there in the 100.0 mL volume ofwater?

If the Ca2+ comes from CaCO3, how many moles of CaCO3 arethere in one liter of the water?

How many grams of CaCO3 per liter?

If 1 ppm (part-per-million) CaCO3 = 1 mg per liter, what isthe water hardness in ppm CaCO3?

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