Question

Ravi prepared a solution of sodium chloride by mixing 5.85 g of salt in 1 litre of water. Find:

i] Molar mass of sodium chloride.
ii] Number of moles of sodium chloride dissolved. (Atomic mass of sodium and chloride are 23 u and 35.5 u respectively).
iii] Concentration of the sodium chloride solution.

• no Spam pls ❌​

Answer 1

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Ravi prepared a solution of sodium chloride by mixing 5.85 g of salt in 1 litre of water. Find:

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i] Molar mass of sodium chloride.

$\rm{❥~Molecular~mass~=~23~+~35.5~=~58.5~u}$

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ii] Number of moles of sodium chloride dissolved. (Atomic mass of sodium and chloride are 23 u and 35.5 u respectively).

$\rm{❥~Number~of~moles~=~{\dfrac{Given~mass}{Molecular~mass}}}$

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iii] Concentration of the sodium chloride solution.

$\rm{❥~{\dfrac{5.85}{58.5}}~=~0.1~moles}$

$\rm{❥~0.1~moles~in~1~litre~hence~it~is~0.1~m~solution~of~NaC1}$

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Answer 2

$\bf\huge\ Question:-$

Ravi prepared a solution of sodium chloride by mixing 5.85 g of salt in 1 litre of water. Find:

i] Molar mass of sodium chloride.

ii] Number of moles of sodium chloride dissolved. (Atomic mass of sodium and chloride are 23 u and 35.5 u respectively).

iii] Concentration of the sodium chloride solution.

$\bf\huge\ Answer:-$

I)58.44g/mole

II)0.1 mole

III)0.1 mole of Nacl