What is observed when carbon -di-oxide is passed through lime water. dilute sulphuric acid is added to sodium carbonate concentrated sodium hydroxide is added to zinc metal also write chemical equations to represent the chemical reaction taking place in each case?
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When CO2 is pass through lime Water it turns milky due to formation of White precipitate caco3.
2NAHCO3 + H2SO4 -NA2SO4 + 2H2O + 2CO2
H2O+Zn+NaOH - Na2Zn(OH)4 + H2
2NAHCO3 + H2SO4 -NA2SO4 + 2H2O + 2CO2
H2O+Zn+NaOH - Na2Zn(OH)4 + H2
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