Question

Q.1
[SINGLE CORRECT]
100 mL of 1 M HCl is mixed with 50 mL of 2 M HCl. Hence, [H,O'Jis-
(A) 1.00 M
(B) 1.50 M
(C) 1.33 M
(D) 3.00 M​

Answer 1

Answer:

(C) 1.33M

Explanation:

M = n/V

now....

100ml of 1M

1 = n1/(100/1000)

n1 = 0.1

next...

50ml of 2M

2 = n2/(50/1000)

n2 = 0.1

hence....

n = n1 + n2

n = 0.1 + 0.1 = 0.2

V = (100 + 50 )ml = 0.15L

therefore....

M = 0.2/0.15

Molarity (mixure) = 1.33M