rp 4: temperature changes

• p1

  1. use a measuring cylinder to measure 30 cm3 of dilute hydrochloric acid
  2. transfer acid into a polystyrine cup & stand the cup in a beaker
  3. measure temperature of the acid w a thermometer & record in a  table
  4. use a measuring cylinder to measure 5 cm3 sodium hydroxide solution & transfer to polystyrine cup
  5. add a plastic lid to cup & place a thermometer through it
• p2

  1. gently stir solution w thermometer
  2. when reading on thermometer stops changing record the highest temperature reached
  3. rinse & dry cup
  4. repeat whole experiment several times, increasing the volume of sodium hydroxide solution by 5 cm3 until 40 cm3
  5. do whole experiment again, calc mean & plot graph