m H2SO4=(200*14,7%)/100%=29,4 g => nH2SO4= 0,3 mol
PT 2KOH+ H2SO4=> K2SO4+ 2H2O
mol 0,6 0,3 0,3
mKOH= 0,6*56=33,6 g=> mdd KOH= (33,6*100)/5,6=600g
V KOH= 600*10,45=6270 ml=6,27 l
mdd spu= 600+200=800 g , mK2SO4= 0,3*174=52,2 g
C%K2SO4=(52,2*100%)/800= 6,525%
2KOH + H2SO4 → K2SO4 + 2H2O
\(m_{H_2SO_4}=200\times14,7\%=29,4\left(g\right)\)
\(\Rightarrow n_{H_2SO_4}=\dfrac{29,4}{98}=0,3\left(mol\right)\)
Theo PT: \(n_{KOH}=2n_{H_2SO_4}=2\times0,3=0,6\left(mol\right)\)
\(\Rightarrow m_{KOH}=0,6\times56=33,6\left(g\right)\)
\(\Rightarrow m_{ddKOH}=\dfrac{33,6}{5,6\%}=600\left(g\right)\)
\(\Rightarrow V_{ddKOH}=\dfrac{600}{10,45}=57,42\left(ml\right)\)
Theo PT: \(n_{K_2SO_4}=n_{H_2SO_4}=0,3\left(mol\right)\)
\(\Rightarrow m_{K_2SO_4}=0,3\times174=52,2\left(g\right)\)
\(m_{ddK_2SO_4}=m_{ddKOH}+m_{ddH_2SO_4}=600+200=800\left(g\right)\)
\(\Rightarrow C\%_{K_2SO_4}=\dfrac{52,2}{800}\times100\%=6,525\%\)
mH2SO4 = \(\dfrac{200.14,7}{100}\)= 29,4 g
=>nH2SO4 = \(\dfrac{29,4}{98}\)= 0,3 mol
2KOH + H2SO4 -> K2SO4 +2 H2O
0,6<-----0,3------->0,3
=>mKOH = 0,6.56 = 33,6
=>V = 33,6 . 10,45 = 351,12 ml = 0,35112 (l)
=>C%K2SO4 = \(\dfrac{174.0,3}{33,6+200}.100\%\) \(\approx\) 22,345%
