A 31.5mL aliquot of HNO3 (aq) of unknown concentration wastitrated with 0.0134 M NaOH (aq). It took 23.9 mL of the base toreach the endpoint of the titration. The concentration (M) of theacid was .I forget how to do titration problems and cannot seem to find anysimilar examples in my text. Is there a specific formula you usefor these?

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal