Aburette was improperly read to 1 decimal place giving a reading of 21.7 ml. if the actual volume is 21.86 ml, what is the percent error caused by this mistake?

Answer : The percent error caused by this mistake is, 0.73%

Solution : Given,

Actual volume = 21.86 ml

Measured volume = 21.7 ml

Formula used for percent error :

Now put all the values in this formula, we get the percent error.

Therefore, the percent error caused by this mistake is, 0.73%

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l