Take two test tubes A and B. Take equal volume of sodium thiosulphate solutions in both the test tubes. Heat the test tube A. Add equal volumes of dilute hydrochloric acid in both the test tubes.
a) In which test tube the rate of the reaction is faster?
b) Which is the factor that influences the rate of reaction in this case?
c) Write down the balanced chemical equation of the reaction taking place here.

Explanation

a) Test tube 1
b) concentration of reactants
c) .Mg + 2HCl rarr MgCl_2 + H_2.