Question

What volume of 0.244 M NaOH is required to react with 50.0 mL of 0.329 M...

What volume of 0.244 M NaOH is required to react with 50.0 mL of 0.329 M MgCL2?

MgCL2(aq) + NaOH(aq) = NaCL(aq) + Mg(OH)2(aq)

(NOT BALANCED)

Homework Answers

Answer #1

BALANCED EQUATION:

MgCl2(aq) + 2NaOH(aq) = 2NaCl(aq) + Mg(OH)2(aq)

Here, 1 mole of MgCl2 reacts with 2 moles of NaOH.

Now, 0.329 M MgCl2,

0.329 moles of MgCl2 in 1000 mL of solvent

0.01645 moles of MgCl2 in 50 mL of solvent.

So, 0.01645 moles of MgCl2 will react with (2 x 0.01645 =0.0329) moles of MgCl2.

NaOH is 0.244 M

0.224 moles of NaOH in 1000 mL of solvent.

0.0329 moles of NaOH will be in (1000 x 0.0329)/0.224 mL of solvent.

0.0329 moles of NaOH will be in 146.875 mL of solvent.

Hence 146.875 mL of 0.244 M NaOH is required to react with 50.0 mL of 0.329 M MgCl2.

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