Question

A student used 10 mL water instead of 30mL for the extraction of the NaCl from the mixture. How would this affect the calculated percentage of NaCl in the sample?

Answer 1

im confused a bit, what is he doing? taking salt and then dissolving it in 10 ml instead of 30 ml?

Answer 2

Yes

Answer 3

if he dissolves same amount of salt in 10 ml and in 30 ml he would get higher percentage of salt in 10 ml and lower percentage in 30 ml

Answer 4

Can u explain how? Well how you came up with that answer please?

Answer 5

Just to better understand.

Answer 6

lets say that he dissolves 5 g of anything in 10 and 30 ml lets say we calculate mass %
gama(mass percentage) = m/V = 5g/10ml = 0,5 g ml-1
gama = 5g/30 ml=0,16 g ml-1

Answer 7

Thanks alot.