Question

7
How many grams of NaOH is required to react with
3.1 g of PA to form PH, and NaH POZ?
(1) 4g
(2) 3 g
(3) 2 g
(4) 1 g​

Answer 1

Answer:

3g of NaOH is required to react with 3.1g of P4 to form PH3 and NaH2PO2. here it is clear that, one mole 3 mol of NaOH reacts with 1 mol of P4. so, 0.025 mol of P4 reacts with 3 × 0.025 = 0.075 mol of NaOH. hence, 3g of NaOH is required to react with 3.1g of P4 to form PH3 and NaH2PO2.

Answer 2

Answer:

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Explanation:

3g of NaOH is required to react with 3.1g of P4 to form PH3 and NaH2PO2. here it is clear that, one mole 3 mol of NaOH reacts with 1 mol of P4. so, 0.025 mol of P4 reacts with 3 × 0.025 = 0.075 mol of NaOH. hence, 3g of NaOH is required to react with 3.1g of P4 to form PH3 and NaH2PO2.