3.3 Equations Flashcards by Elliw Evans

Q

Al metal + dilute acid

A

Al + 2H+ -> Al3+ + H2

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Q

Pb metal + dilute acid

A

Pb + 2H+ -> Pb2+ + H2

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Q

Al metal + dilute alkali

A

Al + 2OH- + 6H2O -> [Al(OH)4]- + 3H2

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Q

Pb metal + dilute alkali

A

Pb + 2OH- + 2H2O -> [Pb(OH)4]2- +H2

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Q

Metal ion solution

Al3+ + dilute NaOH dropwise

A

Al3+ + 3OH- -> Al(OH)3

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Q

Metal ion solution

Pb2+ + dilute NaOH dropwise

A

Pb2+ + 2OH- -> Pb(OH)2

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Q

Metal ion solution

Al3+ + NaOH in excess

A

Al(OH)3 + OH- -> [Al(OH)4]-

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Q

Metal ion solution

Pb2+ + NaOH in excess

A

Pb(OH)2 + 2OH- (aq) -> [Pb(OH)4]2-

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Q

Adding HCl to an oxide

Al2O3 + HCl

A

Al2O3 + 6HCl -> 2AlCl3 + 2H2O

Al2O3 - white solid

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Q

Adding HCl to an oxide

PbO + HCl

A

PbO + 2HCl -> PbCl2 + H2O

PbO - Yellow solid

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Q

Adding NaOH to an oxide

Al2O3 + OH-

A

Al2O3 + 2OH- + 3H2O -> 2[Al(OH)4]-

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Q

Adding NaOH to an oxide

PbO

A

PbO + 2OH- + 3H2O -> [Pb(OH)4]2-

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Q

Lead lV + conc HCl

PbO2 is an oxidising agent

A

PbO2 + HCl -> PbCl2 + Cl2 + H2O

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Q

Fe2O3 + CO

CO is a reducing agent

A

Fe2O3 + 3CO -> 2Fe + 3CO2

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Q

H2O + CO2

A

H2O + CO2 -> H2CO3

reverable reaction

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Q

CO2 + Ca(OH)2

A

CO2 + Ca(OH)2 -> CaCO3 + H2O

Q

PbO2 + 4H+

A

PbO2 + 4H+ -> Pb4+ + 2H2O

Q

PbO + 2OH- + 2H2O

A

PbO + 2OH- + 2H2O -> [Pb(OH)6]2-

Q

2PbO2 + heat

A

2PbO2 -> 2PbO + O2

Q

SiCl4 + 4H2O

A

SiCl4 + 4H2O -> SiCl2.2H2O + 4HCl

Q

PbCl4 + 4H2O

A

PbCl4 + 4H2O -> PbCl2.2H2O + 4HCl

Q

Add cold dilute alkali

Cl2 + 2OH-

A

Cl- + ClO- + H2O

Q

Add cold dilute alkali

Br2 + 2OH-

A

Br- + BrO- + H2O

Q

A cold dilute alkali

I2 + 2OH-

A

I- + IO- + H2O

Q

Add hot concentrated alkali

3ClO-

A

2Cl- + ClO3-

Q

Add hot concentrated alkali

BrO-

A

2Br- + BrO3-

Q

Add hot concentrated alkali

3lO-

A

2l- + lO3-