Question

2 moles of zinc reacts with a cupric chloride solution containing 6.023×10²² formula units of CuCl2 calculate the moles of copper obtained​

Answer 1

$\huge\sf\pink{Answer}$

☞ Your Answer is 0.1 moles

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$\huge\sf\blue{Given}$

✭ Two moles of zinc reacts with a cupric chloride solution

✭ It contains 6.023×10²² formula units of CuCl_2

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$\huge\sf\gray{To \:Find}$

◈ The moles of copper obtained?

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$\huge\sf\purple{Steps}$

So here the chemical equation would be,

$\underline{\underline{\red{\sf Zn+CuCl_2 \to ZnCl_2 + Cu}}}$

We may observe that,

➝ $\sf \small Zn(1 \ mole) + CuCl_2(1 \ mole) \to ZnCl_2(1 \ mole) + Cu(1 \ mole)$

Which means here we may have to find if 2 moles of Zinc reacts with 1 mole or in other words 6.022×10²² particles of CuCl_2 then the number of moles that Cu forms will be,

As per Avogadro 1 mole consists of 6.023×10²³ formula units

Then we know that the number of moles that are present in 6.022×10²² formula units of CuCl_2 will be,

➳ $\sf \dfrac{6.022\times 10^22}{6.022\times 10^23}$

«« Cancel 6.022 »»

➳ $\sf \dfrac{10^22}{10^23}$

➳ $\sf \dfrac{1}{10}$

➳ $\sf \red{0.1}$

As per the reaction we saw that,

• 1 mole of Zinc = 1 mole of Zn Cl2
• 1 mole of CuCl2 = 1 mole of Cu

⪼ $\sf 0.1 \times \dfrac{1}{1}$

⪼ $\sf \orange{Cu = 0.1 \ moles}$

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☯ $\underline{\sf Know \ More}$

☆ Here it was a Displacement Reaction

☆ In a Displacement Reaction a highly reactive element replaces a low reactive element

☆ It can be represented as A + BC ➝ AC + B

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Answer 2

Answer:

Explanation:

So here the chemical equation would be,

We may observe that,

➝  

Which means here we may have to find if 2 moles of Zinc reacts with 1 mole or in other words 6.022×10²² particles of CuCl_2 then the number of moles that Cu forms will be,

As per Avogadro 1 mole consists of 6.023×10²³ formula units

Then we know that the number of moles that are present in 6.022×10²² formula units of CuCl_2 will be,

➳  

«« Cancel 6.022 »»

➳  

➳  

➳  

As per the reaction we saw that,

1 mole of Zinc = 1 mole of Zn Cl2

1 mole of CuCl2 = 1 mole of Cu

⪼  

⪼  

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☯  

☆ Here it was a Displacement Reaction

☆ In a Displacement Reaction a highly reactive element replaces a low reactive element

☆ It can be represented as A + BC ➝ AC + B