Question

If 2gram of NaOH is present in 200 ml of its solution ,its molarity will be​

Answer 1

Answer:

Molarity = 0.25 molar

Explanation:

Molecular weight of NaOH = 40

Now, We have to find the Molarity

Molarity = Moles/Volume in litre

So first we have to find the moles,

Moles = Weight in gram/Molecular weight

Moles = 2/40

Moles = 0.05 mol

Now, Put Moles in formula of Molarity and we have to take Volume in litres so volume will be 0.2litre

Molarity = Moles/Volume in litre

=0.05/0.2

= 0.25 Molar

Answer:- Molarity = 0.25 molar

Answer 2

Answer:

Molarity = 0.25 molar

Explanation:

Molecular weight of NaOH = 40

Now, We have to find the Molarity

Molarity = Moles/Volume in litre

So first we have to find the moles,

Moles = Weight in gram/Molecular weight

Moles = 2/40

Moles = 0.05 mol

Now, Put Moles in formula of Molarity and we have to take Volume in litres so volume will be 0.2litre

Molarity = Moles/Volume in litre

=0.05/0.2

= 0.25 Molar

Answer:- Molarity = 0.25 molar

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