a/ADCT:C%=mct/mdd*100%
C%=4,7/200*100%=2,35%
1, Nong do % cua dung dich thu duoc la
C%=\(\dfrac{4,7}{\left(4,7+195,3\right)}.100\%\)=2,35%
2, Ta co
So mol cua NaCl co trong the tich dung dich tao thanh co nong do 3M la
nNaCl=\(\dfrac{52,65}{94}\approx0,6mol\)
\(\Rightarrow\) The tich dung dich tao thanh la
Vdd=\(\dfrac{nct}{CM}=\dfrac{0,6.1000}{3}=200ml\)