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Question

0.5 moles of H2SO4 is mixed with 0.2 moles of Ca(OH)2. The maximum number of moles of CaSO4 formed is :

A
0.2
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B
0.5
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C
0.4
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D
1.5
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Solution

The correct option is A 0.2
Ca(OH)2+H2SO4CaSO4+2H2O
0.2 0.5 0 ---- Initial
0 0.5 - 0.2 0.2 ----- Final
Since 1 mole of Ca(OH)2 reacts with 1 mole of H2SO4. So, Ca(OH)2 is the limiting reagent.

So, 0.2 mol of Ca(OH)2 is formed.

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