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Concentration terms (molarity, molality, mole fraction, ppm) and dilution
JEE Main level
Single correct option
Difficulty 2 of 3
mc080
200
mL
of
0.50
M
HCl
is mixed with
300
mL
of
1.0
M
HCl
(volumes additive). The molarity of the mixture is
A
0.8
M
B
0.75
M
C
0.4
M
D
1.1
M
Answer: A
Total moles = 0.200 x 0.50 + 0.300 x 1.0 = 0.4 mol in 0.500 L. Molarity = 0.8 M.
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