Asked by prince
calculate the theoretical number of moles of HCl equivalent to 1 mole of
a) NaHCO3
b)CaCO3
c)Al2O3
a) NaHCO3
b)CaCO3
c)Al2O3
Answers
Answered by
Dr Russ
Write out the equations and tell me what you think.
Answered by
prince
a)HCl + NaHCO3 -> NaCl + H2O + CO2
b)2HCl + CaCO3 -> CaCl2 + H2CO3
-> CaCl2 + H2O + CO2
c) Al2O3 + HCl -> AlCl3 + H2O + O2
hmmm
a) 1mole
b) 2moles
3) 1
??
b)2HCl + CaCO3 -> CaCl2 + H2CO3
-> CaCl2 + H2O + CO2
c) Al2O3 + HCl -> AlCl3 + H2O + O2
hmmm
a) 1mole
b) 2moles
3) 1
??
Answered by
prince
oh! is it right? i need to multiply the number of HCl to 1mol/6.022x10^(23)?
Answered by
Dr Russ
a)HCl + NaHCO3 -> NaCl + H2O + CO2
This is fine
b)2HCl + CaCO3 -> CaCl2 + H2CO3
-> CaCl2 + H2O + CO2
OK also
c) Al2O3 + HCl -> AlCl3 + H2O + O2
very few reactions yield O2
3HCl + Al2O3 ---> 2AlCl3 + 3H2O
a) 1 mole - agreed
b) 2 moles - agreed
3) here 3 moles
This is fine
b)2HCl + CaCO3 -> CaCl2 + H2CO3
-> CaCl2 + H2O + CO2
OK also
c) Al2O3 + HCl -> AlCl3 + H2O + O2
very few reactions yield O2
3HCl + Al2O3 ---> 2AlCl3 + 3H2O
a) 1 mole - agreed
b) 2 moles - agreed
3) here 3 moles
Answered by
prince
thank you. i'm just confused what to use to find the number of moles, when there's mass and other given.
thanks for the help.
thanks for the help.
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