Neutralisation

Neutralisation

An Acid is a solution that has a ph less than 7 Acid also is substance

that contains hydrogen, which can be replaced by a metal. The Acidic

solution contains excess of hydrogen irons fl*(ad). An alkali is a

solution that has a ph more than 7 also contains a base soluble in the

water. For example Magnesium oxide when an acid necats with an Alkali

salt and water is formed. The reaction between an Acid and alkali is

exothermal which means the heat escaping this solution with a ph7 is

neutral. Neutralisation is a reaction in which an Acid reacts with a

base or Alkali. Neutralize ions can be replaced as the reaction acid

+base=salt +water.

Aim

My prediction will be that 25m3 of hydrochloric acid would neutralize

25m3 of sodium hydroxide. The colour of the universal indicator

changes and the ph goes down and the temperature increases. The colour

of the universal indicator changes and the ph decreases this happens

because of hydrogen ions reacts with the oxide ions to form water-

H20, which results in less hydroxide ion. During Neutralisation the

temperature goes up after the temperature down the reason why

temperature is rising is because during Neutralisation the bondings

are formed the reason why the temperature is decreasing is because the

bonding is broken which changes in to heat energy.

Balance equation= HCL (aq) +NaCL (aq) +H20

Word equation= H+CL- + NAOH-=H+OH=H20

An independent variable is an investigation you decide to change. A

dependent variable investigation is some thing that you haven't got

control over such as the temperature, ph, colour. A controlled

variable investigation is an investigation that you've got control

over such as the amount of the universal indicator ect.

The equipment that I've used were

· Beakers

· Burettes and stand

· Conical flask

· Eye protection (goggles)

· Graduated pipettes with a bulb filler

· Hydrochloric acid

· Measuring cylinder

· Ph chart