Energy Changes RQP- variables that affect temperature changes in reacting solutions

Question 1

what does this practical test specifically?

Answer 1

the effect of acid concentration on the energy released in a neutralisation reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)

Question 2

step 1

Answer 2

• put 25cm3 of 0.25mol/ dm3 of hydrochloric acid and sodium

Question 3

step 2

Answer 3

place the beakers in a water bath set to 25degrees until they are both at the same temperature (25degrees)

Question 4

step 3

Answer 4

add the HCl followed by the NaOH to a polystyrene cup with a lid

Question 5

step 4

Answer 5

• take the temperature of the mixture ever 30sec and record the hgihest temperature

Question 6

step 5

Answer 6

repeat using 0.5mol/ dm3 and then 1mol/ dm3 of hydrochloric acid

Question 7

what is the equipment set up for this practical?

Answer 7

• polystyrene cup with a lid containing the reaction mixture and a hole through the lid
• this cup is surrounded by cotton wool in a large beaker