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13 Dec 2019

Y2(CO3)3(aq) + HCl(aq) --> YCl3(aq) + CO2(g) + H2O(l)
HCl(aq) + NaOH --> NaCl(aq) + H2O(l)


Consider the unbalanced equations above. A 0.283 g sample of impure yttrium carbonate was reacted with 50.0 mL of 0.0965 M HCl. The excess HCl from the first reaction required 5.31 mL of 0.104 M NaOH to neutralize it in the second reaction. What was the mass percentage of yttrium carbonate in the sample?

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Elin Hessel
Elin HesselLv2
17 Dec 2019

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Related questions

Please answer the above question!

Show transcribed image text

An impure sample of sodium carbonate, Na2CO3, is titrated with0.113 M HCl according to
the reaction below:

2 HCl(aq) + Na2CO3(aq) CO2(g) + H2O(l) + 2 NaCl(aq)

What is the percent of Na2CO3 in a 0.613 g sample if the titrationrequires 26.14 mL of HCl?
The molar mass of Na2CO3 is 106.0 g/mol.

Write (1) a balanced molecular equation, (2) a total ionic equation, and (3) a net ionic equation that would describe a predicted reaction. Please pay attention to details such as charges (e.g. Ba2+ vs. Ba) and states (i.e. (aq), (s), (l), or (g) as appropriate). If a reaction is not predicted to occur (soluble salts on both sides of the equation), only the balanced molecular equation is needed.

 

sodium carbonate + sulfuric acid

Na2CO3 (aq)+ H2SO4(aq) -> Na2SO4(aq) + CO2 (g)+ H2O(l)

Na+(aq)+CO3^2−(aq)+2H+(aq)+SO4^2−(aq) ->H2O(l)+CO2(g)+2Na+(aq)+SO4^2−(aq)

CO3^2−(aq)+2H+(aq) -> H2O(l)+CO2(g)

 

sodiumcarbonate + hydrochloric acid

Na2CO3(aq) + HCl (aq)-> NaCl (aq)+ H2O (l)+ CO2(g)

Na+(aq) + CO3^-2 (aq)

 

potassium chloride + sodium carbonate

KCl (aq)+ Na2CO3 (aq)-> K2CO3 (aq)+ 2NaCl(aq)

 

potassium chloride + silver nitrate

KCl (aq)+ AgNO3 (aq) -> KNO3 (aq)+ AgCl (s)

 

potassium chloride + sodium nitrate

KCl (aq)+ NaNO3 (aq) ->  KNO3 (aq)+ NaCl(aq)

 

nickel chloride + silver nitrate

NiCl2 (aq)+ 2AgNO3(aq) ->  Ni (NO3)2(aq) + 2AgCl (s)

 

nickel chloride + sodium carbonate

KCl (aq)+ Na2CO3(aq) -> K2CO3 (aq)+ 2NaCl(aq)

 

hydrochloric acid + sodium hydroxide

HCl (aq)+ NaOH(aq) ->  NaCl(aq) + H2O(l)

 

Ammonium chloride + sodium hydroxide

NH4Cl(aq) + NaOH(aq) ->  NaCl(aq) + H2O (l)+ NH3(g)

 

sodium acetate + hydrochloric acid

CH3COONa (aq)+HCl (aq) ->  CH3COOH(aq) +NaCl(aq)

 

lead nitrate + sulfuric acid

Pb(NO3)2 (aq)+ H2SO4(aq) -> PbSO4 (aq)+ HNO3(aq)

 

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