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When a 1.25-gram sample of limestone was dissolved in acid 0.44 gram of CO2 was generated if the rock contained no carbonate other than CaCO3 what was the percent of CaCO3 by mass in the limestone?
Wiki User
∙ 16y ago
CaCO3 +2HCl ------------> CaCl2 + CO2 + H2O
number of moles of CO2 in .44 grams = .44/ 44 = .01
From equation it is clear that 1 mole of CO2 is produced from CaCO3 = 1 mole
.01 mole of CO2 is formed from CaCO3 = .01 mole
Weight of .01 mole of CaCO3 is = .01mole *100 g/mole = 1 gram
weight % of CaCO3 is = 1*100/ 1.25 = 80 % w/w
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∙ 16y ago
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What kind of limestone might be deposited in Mammouth Caves?
CALCITE - cryastaline calcium carbonate precipitated from the ground-water that had dissolved it from the limestone above the cave. Calcium Carbonate is the primary constituent of limestone.
What is the meaning of limestone?
A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.
What is limestone calcium carbonate or calcium sulfate?
Calcium carbonate.
What has limestone got in it?
Calcium carbonate!
What are the minerals of marble?
Basically the same as in limestone (i.e. calcium carbonate and sometimes magnesium carbonate) but with water and other volatiles present in limestone squeezed out.
What rocks are dissolved by rain?
Although the carbonic acid contained in rainwater aid in the erosion of all rocks, most susceptible are the carbonate rocks such as limestone.
What kind of limestone might be deposited in Mammouth Caves?
CALCITE - cryastaline calcium carbonate precipitated from the ground-water that had dissolved it from the limestone above the cave. Calcium Carbonate is the primary constituent of limestone.
Is limestone an acidic or neutral or basic substance?
Limestone is made of calcium carbonate, which is a base when dissolved in water
Is limestone a base?
Yes, limestone or calcium carbonate is a base when it is dissolved in water. Water itself can act as either an acid or a base.
How are stalacite formed?
Precipitation and crystallisation of calcite (calcium carbonate) from the ground-water that has dissolved it from the limestone above the cave.
Is limestone a solution?
No it is not. Limestone itself is not a solution. Limestone is a rock which is primarily calcium carbonate as are marble and chalk. Calcium carbonate will react with water if the water contains dissolved Carbon Dioxide (forming a mild carbonic acid) resulting in Calcium Bicarbonate which is soluble and does form solution in water.
Does limestone turn water blue?
No, limestone is a sedimentary rock that is the basis for marble if it is compressed by millions of years of pressure. Limestone consists of calcium carbonate, CaCO3. Limestone dissolved in slightly acidic water forms the basis of stalactites and stalagmites in limestone caves.
What chemical limestone form?
Calcium carbonate or calcium magnesium carbonate.
How do stalagmites form in limestone caves?
no one noes Yes they do. Precipitation and crystallisation of calcium carbonate dissolved from the limestone by water leaching through the joints, bedding-planes or faults in the rock.
Does limestone and water made calcium carbonate?
No. Limestone is Calcium Carbonate. Limestone plus water makes wet calcium carbonate. With a very slight amount of calcium carbonate dissolving.
Does limestone dissolved in acid?
YES!!! Limestone is an impure form of calcium carbonate. Calcium carbonate will react with acids to form the corresponding salt, water and carbon dioxide. e.g. CaCO3(s) + 2HCl(aq) = CaCl2(aq) + H2O(l) + CO2(g)
Why is Calcium Carbonate in limestone important?
It is the primary chemical constituent of limestone. CaCO3, Calcium Carbonate, Calcite, Aragonite. These comprise limestone.
