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Two samples of HCl having 1M and 0.25 M are mixed. Find the volumes of these samples respectively taken in order to prepare 0.75 M HCl solution.A. 20 ml, 10 mlB. 100 ml, 50 mlC. 40 ml, 20 mlD. 50 ml, 25ml

Answer» Correct Answer - A,B,C,D
Final molarity =`(V_1xx1+V_2xx0.25)/((V_1+V_2))`
`0.75(V_1+V_2)=V_1+V_2xx0.25`
`0.75 V_1+0.75 V_2=V_1+V_2xx0.25`
`0.5 V_2=0.25V_1`
`V_1/V_2=2`


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