RPA:04 temperature Change

Question 1

Aim

Answer 1

Investigate the variables that affect temperature change in chemical reactions

Question 2

Step one

Answer 2

Measure 25 cm³ of hydrochloric acid into a polystyrene cup

Question 3

Step two

Answer 3

 Place cup inside beaker to make it more stable

Question 4

Step three

Answer 4

Measure and record temperature of acid

Question 5

Step four

Answer 5

Add 5 cm³ of sodium hydroxide into polystyrene cup and place a lid on the cup whilst stirring solution With thermometer

Question 6

Step five

Answer 6

Record temperature on thermometer when it stops changing and remains constant

Question 7

Step six

Answer 7

Repeat step 4 to add further 5 cm³ of sodium hydroxide until 40 cm³ has been added

Question 8

Step seven

Answer 8

Calculate mean maximum temperature reached for each of the sodium hydroxide solutions