In the titration of acetic acid with a strong base NaOH, the concentration of acetic acid is determined using the volume and molar concentration of NaOH used for titrating the vinegar solution. NaOH and acetic acid react in 1:1 mole ratio.
When a drop of the strong base, dispensed from the buret sticks to the walls of the Erlenmeyer flask but is not washed into the flask containing vinegar, it means that the recorded value of NaOH dispensed will be higher than the actual value required for the titration. So, the reported moles of acetic acid calculated from the moles of NaOH used for the titration will be higher. So, the mass percent reported will be higher than the actual value.
13 neutrons.
Mass=25
Number=12
Mass - Number= Amount of Neutrons
The atomic number is also the mount of Protons and Electrons of the element.
The alkene will not react as potassium dichromate because it's not strong enough but it will react with acidified potassium manganate which is a stronger oxidizing agent.