Chemistry, 06.10.2019 00:30 bryanmcmillianjr

What type of substance reacts with limestone (caco3) and produces carbon dioxide gas?
a) a neutral substance
b)a base
c)an acid
d)both an acid and a base

Answers: 2

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Answers

Answer from: penelopymorales

The correct answer is C) An acid

Answer from: Jofish5815

Answer

Option C= an acid

Explanation

CaCO₃ is a very wide spread compound, and is found in chalk, lime, marble etc. This substance plays a very important role for human beings, as calcium carbonate is also widely used in the food industry, as a natural white colorant. CaCO₃ is also used for the manufacture of paper and plastic, in construction, and in many other spheres.

Calcium carbonate is a white substance (solid crystals) in powder or solid form, which is capable of reacting with water, but does not completely dissolve in it. But When any acid is reacted with calcium carbonate, the salt of the anionic part of the acid with calcium is formed. And H2CO3 is formed which may later break down to H2O+CO2, hence net reaction will be,

Chemical equation

2HCl + CaCO3 → CaCl2 + H2CO3

H2CO3 → H2O (l) + CO2 (g)

When calcium carbonate reacts with sulfuric acid, it forms water, carbon dioxide and calcium sulfate.

1. CaCO3 (s) + H2SO4 (l) → H2CO3 (aq) + CaSO4 (s)

2. H2CO3 (aq) → H2O (l) + CO2 (g)

So…

CaCO3 (s) + H2SO4 (l) → H2O (l) + CO2 (g) + CaSO4 (s)

Answer from: Quest

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

hungary

66.9%

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

ans is no, the data set cannot be plotted as a single circle graph

Answer from: Quest

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the creativity of john dalton.

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What type of substance reacts with limestone (caco3) and produces carbon dioxide gas?
a) a ne...

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