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What happens when : (i) Dilute hydrochloric add is added to solid sodium carbonate (ii) Quicklime is treated with water. (iii) Sodium chloride solution is added to lead nitrate solution. Also write the chemical equation in each case. CBSE Class X Science SA 2 (3 Marks)

Answer»

1) When dilute HCl is added to solid Na2CO3,then a CHEMICAL reaction takes place to form a salt,Sodium Chloride(NACL),WATER and Carbon Dioxide.(which is produced inthe form of brisk effervescence).Explanation:It is actually one of the properties of acids.When a dilute ACID reacts with metal carbonates or metal HYDROGENCARBONATES,then a salt,water and Carbon Dioxide Gas is formed.CO2 is formed in the formed of brisk effervescence.The presence of CO2 can be tested by passing the gas formed through lime water.If it turns milky,then the gas is CO2



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