Chemistery

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Essay Responses:

Essay #1

When sulfuric acid is a component of polluted air, it chemically attacks statues, memorials, and monuments made from limestone. Given that the most common mineral in limestone is calcium carbonate, describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?

Essay #2

Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. 
A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution. 
B. Discuss at least three potentially hazardous features associated with concentrated sulfuric acid.

Answer Submitted by cybacatx on Thu, 2014-01-16 04:52teacher rated 0 times0price: $7.00 100 % good answer A+++

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xxxx sulfuric acid is x component xx xxxxxxxx air, it chemically attacks xxxxxxxx memorials, xxxxxxxxxxxxx made xxxx xxxxxxxxxx xxxxx xxxx xxx most xxxxxx xxxxxxx in xxxxxxxxx xx calcium carbonate, describe how xxxxx xxxxxxxxx objects are corroded by the sulfuric acid xx polluted air. What xxxxxxxx reaction xx xxxxxxxx xxxxxxxxxx xxxxxxxxxxxx listed We can treat xx in x xxxxxxxxxxxxxxxxxxxx xx H2SO4 : xxxxx is produced xx reaction xx xxxx xxxxxx comes from xxx buring of sulphur xxxxxxxxxx xxxxxxxxxxxx xx xxxxx plants] oxidized to xxx by arial oxygen xxxxxxx by reaction with xxxxxxxx to xxxxxxxx H2SO4. SO2 xxxxxx xxxxxxxxxxxx x xxxxxxxxxxxxxxxxxxxx xx Lime xxxxx&xxxx Marble x xxxxxx and xxxxxxxxx xxxx xxx chemically calcium xxxxxxxxx (CaCO3), xxxx with different xx their xxxxxxxxxxxxxx and porosity. Limestone: xxxxxxx xxxxxxxx and xxxx pores. xxxxxxxx have xxxxxx crystals and xxxxxxx xxx lesser xxxxxxxxx Marble attains xxxxxx polish xx xx is widely used in xxxxxx xx mordan day

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Part x

xxxxxxxxxxxxxxx xx fuming sulfuric xxxx is available xxxxxxxxxxxx in xxxxxxxxxxxxxx ranging xxxx 20 xxxxxxxx xxxxxx trioxide. xxxx is xxx xxxxxxx xx xxxx xx xxxxxx xxxxxxxx xxxxx xx xxxxx xx expressed as 3H2SO4 x xxxxx Show your solution. Solution: Formula used is Mass percent xx SO3 in oleum = (mass xx xxx xx Oleum / mass of xxxxxx x xxxxx xxxxxxxx of x = xxxx xxxx xxxx xx O x 16.00 xxxx and mass xx x = 32.06 amu Mass xx oleum, xxxxxx . xxxx = 3 x [mass of xxxxxx x 5 x xxxxx of xxxxxx 3 x [2 x xxxx + x x xxxxx + x x 16.00] + x x xx x 32.06 x 3 x 16.00] = xxxxxx amu Mass of xxx in xxxxx formula xxxx = 5 x xxxxx of xxxxxxx x [1 x xxxxx + x x 16.00] = xxxxx xxxxxxx put xxx values in equation (1) and xxxxx xxx mass percent xx xxx xx oleum Mass percent xx xxx xx xxxxx = (400.3 amu x xxxxxx amu) x 100 = 57.64 % Thus, the xxxx percent of xxx in xxxxx xx xxxxxxx

Part B. Sulfuric acid xxxxx xxxxx xxx list of xxxxxxxxx xxxxxxxxx x xxx List of xxxxxxxxx ] for mainly xxx xxxxxxxxx

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Part#1

xxxx sulfuric xxxx xx a component of xxxxxxxx air, xx chemically attacks xxxxxxxx memorials, xxxxxxxxxxxxx xxxx from xxxxxxxxxx xxxxx xxxx xxx xxxx xxxxxx xxxxxxx xx limestone xx calcium carbonate, describe xxx xxxxx xxxxxxxxx xxxxxxx are xxxxxxxx by the xxxxxxxx acid xx polluted air. What xxxxxxxx xxxxxxxx is involved xxxxxxxxxx xxxxxxxxxxxx listed We xxx xxxxx it xx 3 parts 1. Occurrence of xxxxx x xxxxx xx produced by xxxxxxxx of xxxx mainly comes from xxx buring xx sulphur containing fossil fuels by xxxxx xxxxxxx xxxxxxxx xx SO3 xx arial oxygen further xx reaction xxxx moisture xx produced H2SO4. SO2 +1/2O2 xxxxxxxxxxxx x H2SO4 2. Structure of xxxx xxxxx& xxxxxx x xxxxxx xxx limestone both xxx chemically calcium xxxxxxxxx xxxxxxxx only with different in xxxxx xxxxxxxxxxxxxx xxx xxxxxxxxx Limestone: smaller xxxxxxxx and more xxxxxx xxxxxxxx xxxx larger xxxxxxxxxxxx xxxxxxx xxx lesser pores But xxxxxx xxxxxxx xxxxxx polish so xx is widely used xx xxxxxx to mordan day

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