Write the balanced chemical equations for the following reactions:
(a) Sodium carbonate solution on reaction with hydrochloric acid in equimolar concentration gives sodium chloride and sodium hydrogen carbonate
(b) When cold water is added to sodium, violent exothermic reaction takes place and sodium hydroxide and hydrogen are produced,
(c) Potassium metal reacts with water to give potassium hydroxide and hydrogen is released.
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Balance the Chemical Equation for the reaction of calcium carbonate with hydrochloric acid: CaCO3+ HCl -> CaCl2 + CO2 + H2O.
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