A is a solution of HNO3 of unknown concentration. B is a standard solution of NaoH containing 4.00gdm-3 of the solution 25cm3 portion of solution B requires an average of 24.00cm3 of solution A for complete Neutralization. a) state with reason a suitable indicator for the titration.b) write a balanced equation for the reason c) calculate 1) concentration of solution B in moldm3 2)concentration of solution A in moldm3 3) concentration in gdm-3 of HNO3 in solution A( H=1,o=16, Na=23)
a) A suitable indicator for the titration is phenolphthalein, as it changes color from colorless to pink when the solution is neutralized.
b) The balanced equation for the reaction is:
HNO3 + NaOH → NaNO3 + H2O
c) 1) The concentration of solution B in mol/dm3 is 0.16 mol/dm3.
2) The concentration of solution A in mol/dm3 is 0.067 mol/dm3.
3) The concentration in g/dm3 of HNO3 in solution A is 16.0 g/dm3.