Question

2 moles of zinc reacts with a cupric chloride solution containing 6.023x10²² formula units of cucl2 calculate the moles of copper obtained

Answer 1

Zn + CuCl2 ---->  Cu + ZnCl2
moles of Zn = 2 
moles of CuCl2 =  6.023 x 10^23 / 6.023 x 10^22 = 10
according to the reaction 1 mole of Zn reacts with 1 mole of cupric chloride 
therefore 2 moles of zinc will react with 2 moles of copper chloride and will produce 2 moles of copper .

Answer 2

Answer:

0.1 moles

Explaination:

we know that  1 mole of zinc reacts with  1 mole of CuCl2 gives one mole of Cu  then 2 moles of Zn with 2moles ofCuCl2 gives 2 moles of Cu

here they asked 2 mole of Zn reacts with 6.022*10 to the power of 22

how many moles of copper obtained?

then 1 mole of Cu                            ----------------------                6.022*10 power 23

then how many moles of cu           ----------------------                6.022*10 power 22

cross multiply

then, 6.022*10 power 23*1/6.022*10 power 22 = 0.1

here dont consider of zinc moles because zinc is not include with Cu

therefore 0.1 moles cu obtained

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