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What volume of 6M HCl and 2M HCl should ...

What volume of 6M HCl and 2M HCl should be mixed to get one litre of 3M HCl?

Text Solution

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Suppose the volume of 6M HCl required to obtain 1L of 3M HCl = XL
Volume of 2M HCl required = (1-x)L
Applying the molarity equation
`M_1 V_1 + M_2V_2 = M_3V_3 `
`6 MHCl + 2MHCl = 3MHCl`
`6x+2(1-x) = 3 xx 1`
`6x + 2 -2x = 3 `
` 4x =1 `
`x =0.25 L`
hence, volume of 6 M HCl rquired = 0.25 L
Volume of 2M HCl required = 0.75 L
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