A student performs the reaction shown below.
NaOH + HCl → NaCl + H2O
She increases the concentrations of NaOH and HCl, and finds that NaCl is produced much more quickly. Which explains the outcome of her experiment?
NaOH and HCl molecules collide more frequently at higher concentrations.
NaCl requires a high concentration for any reaction to occur.
HCl acts a catalyst, but only at high concentrations.
The higher concentrations create a higher temperature in the solution.

Question

A student performs the reaction shown below.
NaOH + HCl → NaCl + H2O
She increases the concentrations of NaOH and HCl, and finds that NaCl is produced much more quickly. Which explains the outcome of her experiment?
NaOH and HCl molecules collide more frequently at higher concentrations.
 NaCl requires a high concentration for any reaction to occur.
 HCl acts a catalyst, but only at high concentrations. 
The higher concentrations create a higher temperature in the solution.

anonymous · Answer

I would say A. A higher concentration means more molecules which would in turn cause more frequent collisions

anonymous · Answer

A

michele_laino · Answer

Please note that you can explain your observation, using the Le Chatelier principle,
namely when the concentration of NaOH and HCl are increased, then the reaction evolves from left to right so the equilibrium will vanish, now, the system will answer in order to re-establish the Equilibrium, so the concentration of NaCl will increase in order to evolve the reaction from right to left

anonymous · Answer

thanx guys you were right!!