calculate the degree of hardness of a water sample containing 0.001 mole of Mgso4 dissolved in 2 Litres of water?

Question

anonymous · Answer

@ujjwal

anonymous · Answer

mcq?

anonymous · Answer

no  but i know the answer but cant solve for it..

anonymous · Answer

whats the formula for the harndess?

anonymous · Answer

ppm= x+50/e2

anonymous · Answer

i am not sure bro, sorry...maybe others would help

apoorvk · Answer

degree of hardness is the no. of moles of the 'foreign' molecule divided by the no. of molecules of water.

anonymous · Answer

can anyone solve for  it..............

anonymous · Answer

@apoorvk can u tell me step by step

apoorvk · Answer

you have two litres of water - that is 2 kilos - which is 2000gms.
one mole of water is 18gms. find out the no. of moles of water present.

you already have the no. of moles of MgSO4 present. - divide the two now

anonymous · Answer

@apoorvk  then the mole which i got is a huge number

apoorvk · Answer

how many moles of water did you get?

anonymous · Answer

111

apoorvk · Answer

that is right.

anonymous · Answer

then wat next