Question

Tìm thể tích của dung dịch NaOH 5M để trong đó có hòa tan 60g NaOH

Answer 1

\(n_{NaOH}=1,5\left(mol\right)\)

\(V=\dfrac{1,5}{5}=0,3\left(l\right)=300\left(ml\right)\)

Answer 2

\(n_{NaOH\left(ct\right)}=\dfrac{m_{NaOH}}{M_{NaOH}}=1,5\left(mol\right)\)

\(V_{ddNaOH}=\dfrac{n_{ctNaOH}}{C_{M_{NaOH}}}=0,3\left(l\right)\)

Answer 3

\(n_{NaOH}=\frac{60}{40}=1,5(mol)\\ V_{ddNaOH}=\frac{1,5}{5}=0,3(l)=300(ml)\)