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Question

If 0.5 moles of BaCl2 is mixed with 0.2 moles of Na3PO4, the maximum number of moles of Ba3(PO4)2 that can be formed is:

A
0.7
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B
0.5
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C
0.03
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D
0.10
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Solution

The correct option is D 0.10
The reaction is BaCl2+2Na3PO4Ba3(PO4)2+6NaCl.

1 mole of BaCl2 reacts with 2 moles of Na3PO4 to form 1 mole of Ba3(PO4)2.

So, we can see that sodium phosphate is the limiting reagent.

0.1 moles of BaCl2 will react with 0.2 moles of Na3PO4 to form 0.10 moles of Ba3(PO4)2.

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