Дано: m(Na)-4.6г m(H2O)-150г W(р.вещ.)-?...

dasadasa20001 @dasadasa20001

October 2021 1 19 Report

Дано:
m(Na)-4.6г
m(H2O)-150г

W(р.вещ.)-?

Answers & Comments

MMMAAA97 2Na+2H2O=2NaOH+H2
n(Na)=n(NaOH)=4.6/23=0.2
m(NaOH)=0.2*40=8
m(p)=4.6+150-0.2=154.4
w=8/154.4*100%=5.18%

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