Question

What is the molarity of a solution that contains 17g of NH₃ in 0.50L of solution?

Please explain as well!

Answer 1

Step-by-step explanation:

Because molarity is mol/L, we'll have to convert 17g to mol.

After obtaining the mol, we'll divide that by the volume to obtain Molarity.

Answer 2

Molar mass of Ammonia:-

`\\ \sf\longmapsto NH_3`

`\\ \sf\longmapsto 14u+3(1u)`

`\\ \sf\longmapsto 14u+3u`

`\\ \sf\longmapsto 17u`

`\\ \sf\longmapsto 17g/mol`

Moles of Ammonia:-

`\boxed{\sf No\:of\:moles =(Given\:mass)/(Molar\:mass)}`

`\\ \sf\longmapsto No\:of\:moles=(17)/(17)`

`\\ \sf\longmapsto No\;of\:moles=1mol`

• Volume of solution=0.50L

We know

`\boxed{\sf Molarity=(Moles\:of\:solute)/(Volume\:of\: Solution\:in\:L)}`

`\\ \sf\longmapsto Molarity=(1)/(0.50)`

`\\ \sf\longmapsto Molarity=2M`