Photo AI
A series of observations was made about a first-hand investigation - HSC - SSCE Chemistry - Question 7 - 2005 - Paper 1
Question 7
A series of observations was made about a first-hand investigation. - A cup of carbonated soft drink was poured from a newly-opened, chilled bottle. - A lot of bubb... show full transcript
Worked Solution & Example Answer:A series of observations was made about a first-hand investigation - HSC - SSCE Chemistry - Question 7 - 2005 - Paper 1
Step 1
Why were there no bubbles visible in the cup after several hours?
Answer
The reason there were no bubbles visible in the cup after several hours is that carbon dioxide becomes less soluble in liquid when the temperature increases. As the soft drink is left out on the kitchen bench, it warms up, causing the dissolved carbon dioxide to escape as gas, resulting in fewer or no bubbles being visible. Therefore, the correct answer is (C) Carbon dioxide is less soluble at higher temperatures and lower pressures.