Question
A reaction between dilute acid and calcium carbonate was carried out three times. Everything was kept the same each time except for the calcium carbonate , which was in the form of large chunks , small chunks or powder (though the mass used was constant). The table shows the results . What was the reaction time for the large chunks? Enter a number s
Answer
4.2
(268 Votes)
Fern
Master · Tutor for 5 years
Answer
165
Explanation
## Step 1:Identify the forms of calcium carbonate and their corresponding reaction times from the table provided.## Step 2:Assign the forms of calcium carbonate to the reaction times. Typically, larger chunks react slower due to less surface area, while smaller chunks and powders react faster due to increased surface area.## Step 3:Determine which reaction time corresponds to the large chunks. Given the reaction times (78 seconds, 22 seconds, and 165 seconds), the longest reaction time is likely for the large chunks.## Step 4:Verify the assignment by considering the surface area effect on reaction rates. Larger chunks have less surface area, leading to slower reactions.