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Class 11
Chemistry :-Additional Questions_ Set - 1 - Some Basic Concepts Of Chemistry.

 a. 0.30 mole Zinc are added to hydro­chloric acid containing 0.52 mole HCI. How many moles of H2 are produced?
b. Identify the limiting reagent in the above reaction.

Answer:

a. According to the equation, 2 mol of HCI produces 1 mole of H2 (g).
∴ 0.52 mol of HCI produces = \frac { 0.52\times 1 }{ 2 }
= 0.26 mole H2
b. HCI is the limiting reagent. (The reac­tant which gets consumed and limits the amount of product formed is called limiting reagent.)

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NCERT Chemistry Class 11

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