Adding a solution containing potassium carbonate to a solution containing hydroc

Question

Adding a solution containing potassium carbonate to a solution containing hydrochloric acid will have what risks associated?

(a. autoignition.  

(b. potassium reacts with water exothermically, with evolution of flammable hydrogen gas.

(c. release of carbon dioxide with vigorous bubbling/frothing.   

(d. release of toxic chlorine gas.

What is the purpose of sodium chloride in a Diazonium Coupling experiment?

(a. chloride ion acts as a nucleophile

(b. it serves as a drying agent

(c. the addition of salt lowers the solubility of your product in water

Explanation / Answer

1) Na2CO3 + 2 HCL ---> 2NaCl + CO2 + H2O   is the reaction

Thus we get carbon diozide gas with rigourous bubbling

2) addition of salt lowers solubility of the product since product is weakly polar in nature while salt is polar in nature , as salt is added our solution beocmes more polar in nature and hence our weakly polar product is precipitated

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