Salt S is dissolved in water and three tests are carried out on the solution. test result 1 aqueous sodium hydroxide is added green precipitate formed, insoluble in excess sodium hydroxide no reaction 2 dilute nitric acid is added 3 aqueous barium nitrate is added to the acidified solution from test 2 white precipitate fomed What is the identity of S? A copper(II) chloride B copper(II) sulfate Ciron(II) chloride O D iron(II) sulfate

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Chapter1: Chemical Foundations
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Salt S is dissolved in water and three tests are carried out on the solution.
test
result
1 aqueous sodium
hydroxide is added
green precipitate formed,
insoluble in excess sodium
hydroxide
2 dilute nitric acid is added
no reaction
3 aqueous barium nitrate is added
to the acidified solution from test 2
white precipitate fomed
What is the identity of S?
A copper(II) chloride O
B copper(II) sulfate O
C iron(1I) chloride O
D iron(II) sulfate
Transcribed Image Text:Salt S is dissolved in water and three tests are carried out on the solution. test result 1 aqueous sodium hydroxide is added green precipitate formed, insoluble in excess sodium hydroxide 2 dilute nitric acid is added no reaction 3 aqueous barium nitrate is added to the acidified solution from test 2 white precipitate fomed What is the identity of S? A copper(II) chloride O B copper(II) sulfate O C iron(1I) chloride O D iron(II) sulfate
A compound contains 85.7% carbon and 14.3% hydrogen by mass. Calculate the
*.empirical formula of this compound
CH2 O
CH
CH3
C2H O
Transcribed Image Text:A compound contains 85.7% carbon and 14.3% hydrogen by mass. Calculate the *.empirical formula of this compound CH2 O CH CH3 C2H O
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