How many moles of Iodine vapor react with 1.00 mol of hydrogen gas?_H_2(g) +_I_2

Question

How many moles of Iodine vapor react with 1.00 mol of hydrogen gas?_H_2(g) +_I_2(g) rightarrow_HI(g) 0.500 mol 1.00 mol 2.00 mol 4.00 mol none of the above How many moles of hydrogen gas react to yield 1.00 mol of hydrogen Iodide?_H_2(g) +_I_2(g) rightarrow_HI(g) 0.500 mol 1.00 mol 2.00 mol 4.00 mol none of the above What is the mass of silver metal produced from 6.35 g of copper?_Cu(s) +_AgN0_3(aq) rightarrow_Cu(NO_3)2(aq) +_Ag(s) 0.187 g 0.540 g 0.747 g 1.08 g 21.6 g What is the volume of hydrogen gas at STP released from 2.70 g of aluminum metal and hydrochloric acid?

Explanation / Answer

Q-1

your answer is correct

from the given reaction it is clear that both H2 and I2 will react with 1:1 mole ratio

so 1 mole of I2 will react with one mole of H2

Q-2

your answer is correct

H2 nad I2 both react in 0.5 mol we will get the 1 mole of I2

Q-3

moles of Cu = 6.35 g / 63.546 g/mol = 0.1 mol

if you balance the given equation

Cu(s) + 2Ag(NO3)2 ------> Cu(NO3)2 aq + 2Ag (s)

from this equaation 1 mol of Cu will give 2 mole of Ag

accordingly 0.1 mol of Cu will give 0.1x2 = 0.2 mole of Ag

mass of Ag = 0.2 mol x 107.868 g/mol = 21.57 g

again your answer is correct

4

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