1.

The molarity of a solution obtained by mixing 800 mL of 0.5 M HCl with 200 mL of 1 M HCI will be

Answer»

0.8 M
0.6 M
0.4 M
0.2 M

Solution :`M_1V_1 + M_2V_2 = M(V_1 + V_2)`
` 0.5 XX 800 + 1 xx 200 = M (800 + 200)`
`M = (400+ 200)/(1000) = 0.6 M`


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