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Question

If 0.5 moles of BaCl2 is mixed with 0.20 moles of Na3PO4, the maximum number of moles of Ba3(PO4)2 that can be formed is :

A
0.1
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B
0.2
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C
0.5
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D
0.7
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Solution

The correct option is C 0.1
3BaCl23mol+2Na3PO42mol6NaCl6mol+Ba3(PO4)21mol
Given, 0.5 mol of BaCl2 and 0.2 mol of Na3PO4 are mixed.
2 mol of Na3PO4 3 mol of BaCl2
0.2 mol of Na3PO4 0.3 mol of BaCl2
Na3PO4 is the limiting reagent.
2 mol of Na2PO4 1 mol of Ba3(PO4)2
0.2 mol of Na3PO4 0.1 mol of Ba3(PO4)2

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