Serial Dilutions question
Hi I really struggle with serial dilutions, please could someone help me with this question?
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
(edited 3 years ago)
Original post by science_geeks
Hi I really struggle with serial dilutions, please could someone help me with this question?
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
If it's a 25x deilution you must end up with the same moles in 25 x more volume.
So you add 24 times the initial volume, so the total volume is 25x the original volume.
Original post by science_geeks
Hi I really struggle with serial dilutions, please could someone help me with this question?
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
How much distilled water should be added to a 5ml stock solution to make a 25 X dilution?
** update - I've had another go and I've worked out 4.8 ml.. **
Given that charco answered your Q about five hours before you posted your incorrect update, then I'd be worried, if I were you.
You worked out how much water you'd need to make 5 ml of a 25x dilution of your stock, rather than "to add to [the] stock solution".
Original post by charco
If it's a 25x deilution you must end up with the same moles in 25 x more volume.
So you add 24 times the initial volume, so the total volume is 25x the original volume.
So you add 24 times the initial volume, so the total volume is 25x the original volume.
Thank you for your help! That makes sense
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