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4242935
Sulfur and Sulfuric acid
Descrição
from "Chemistry for Cambridge IGCSE" textbook
Sem etiquetas
cambridge igcse chemistry
igcse
chemistry
sulfur and sulfuric acid
gcse
chemistry
igcse
Mapa Mental por
Tanatswa Chinzowu
, atualizado more than 1 year ago
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Criado por
Tanatswa Chinzowu
mais de 8 anos atrás
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Resumo de Recurso
Sulfur and Sulfuric acid
Sulfur
Sources
Mining
sulphide ores
Natural gas and petroleum
Uses
manufacturing sulfuric acid
make rubber tyres flexible (vulcanising)
making dyes
Sulfur dioxide
sources
volcanoes
uses
used as bleach during manufacture of paper from wood pulp
bleaching silk as well
preserve food and drinks
kills present bacteria
sulfite ions usually added
SO3 (2-) + 2H (+) -------> SO2 + H20
It is the gas given off when sulfur burns
S + O2 -----> SO2
also made from roasting ores
2ZnS + 3O2 ----> 2ZnO + 2SO2
Sulfuric acid
is a dibasic acid.
It has 2 hydrogen ions per molecule that can react
H2SO4 + 2NaOH ----> NaSO4 + H20
sulfuric acid + sodium hydroxide -----> sodium sulfate + water
H2SO4
it is a strong acid with typical acid properties
reacts with metals above hydrogen in reactivity series to form a salt and hydrogen
H2SO4 + Zn ----> ZnSO4 + H2
reacts with metal oxide to form salt and water
H2SO4 + MgO ---> MgSO4 + H20
reacts with metal hydrixide to form salt and water
H2SO4 + 2KOH ----> K2SO4 + 2H2O
reacts with metal carbonate to form salt, water and carbon dioxide
H2SO4 + Na2CO3 ---> Na2SO4 + H20 + CO2
can form hydrogensulfates by replacement of one of hydrogen ions
H2SO4 + NaOH ---> NaHSO + H20
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