At 25 °C, what is the hydroxide ion concentration, [OH−] , in an aqueous solution with a hydrogen ion concentration of [H+]=1.9×10−9 M?

The correct answer will be "5.26 × 10⁻⁶".

Explanation:

The given values is:

As we know,

⇒  

On taking log, we get

⇒  

Now,

Taking "log" as common, we get

⇒  

⇒  

⇒  

On putting the estimated value of "", we get

⇒            

⇒            

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.