Photo AI
2 (a) Calcium chloride solution reacts with silver nitrate solution - Edexcel - GCSE Chemistry - Question 2 - 2012 - Paper 1
Question 2
2 (a) Calcium chloride solution reacts with silver nitrate solution. Solid silver chloride and calcium nitrate solution are formed. (i) Complete the sentence by put... show full transcript
Worked Solution & Example Answer:2 (a) Calcium chloride solution reacts with silver nitrate solution - Edexcel - GCSE Chemistry - Question 2 - 2012 - Paper 1
Step 1
Step 2
(ii) 1. Suggest why the yield was less than 4.0 g.
Answer
The yield of silver chloride may have been less than the theoretical value of 4.0 g due to several possible reasons:
- Incomplete Reaction: Not all reactants may have reacted completely.
- Loss of Material: Some silver chloride might have been lost during the transfer process, for instance, sticking to the beaker or filter paper.
- Side Reactions: Unfocused side reactions could have occurred, consuming some of the reactants.
- Filtration Loss: Some of the solid could have been washed away or lost on the filter paper during filtration.
Step 3
(ii) 2. Calculate the percentage yield of this experiment.
Answer
To calculate the percentage yield, we use the formula:
ext{Percentage Yield} = rac{ ext{Actual Yield}}{ ext{Theoretical Yield}} imes 100Substituting in the values:
ext{Percentage Yield} = rac{3.0 ext{ g}}{4.0 ext{ g}} imes 100 = 75 ext{ %}Thus, the percentage yield of the experiment is 75%.