Question

Case study bused Questions concentration of a solution is expressed in different ways such as Mass% Mass by volume and volume a student prepared three solution of sodium hydroxide as follows
A 20 g NaOH in 50g water
B. 20 g NaOH in water volume of solution 250 ml
C 20 g NaOH water mass of solution - 225 g
150 g of water
Use the information and answer the following questions

How much Sodium Hydroxide be added to Beaker D so that we get the solution of concentration same as that of solution A? (a) 60g (b) 80 (c) 40g (d) 20g (1)
concentration of solution B in glis a) 60g (b) 80 c) 40g (d) 20 (1)
How many solutions out of A B C D have same concentration (a) 2 (b) 3 (c) 4 (d) None​

Answer 1

Answer:

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