Question

Make 100 mls of a 10X saline stock solution-- 100mls of 9% sodium chloride. (Please show calculations)

Answer 1

Answer

A. Stock solution is 10X

To make 100 ml divide total volume of solution by 10

So 100/10= 10ml

So from stock solution take 10 ml and mix with 90 ml of water or saline to prepare 100ml of 1X solution.

B. To make 100 ml of 9% NaCl

9% = 9 g of NaCl in dissolved in 100 ml water.

we need to make a stock of 100 ml with 9% of NaCl

Therefore; (9g Nacl) (100ml/100ml) = 9 grams

Finally take 100 ml of water and weigh 9 g of NaCl. Mix properly to make a stock solution of 9%.

Hope it will helpful to you. Thank you

All the best