Question

1. If 24.5 g of H2SO4 is added to 500ml of water, the molarity of resulting solution is
(a) 0.24 M
(b) 0.5 M
(c) 1M
(d) 0.75 M

2. How many grams of NaOH must be added to prepare 100 c.c. of 0.25 M NaOHsolution.
(a) 4g
(b) 6g
(c) 1g
(d) 10g​

Answer 1

Answer:option B, 0.5m

Explanation:

M= w/gmw×1000/v(ml)

M=24.5/98×1000/500

M=245/980×2

M=245/490

M=1/2

M=0.5m

So molarity is 0.5m