2К+2Н2О = 2КОН+Н2 реакция замещения
<span>Na</span><span>3</span><span>PO</span><span>4</span><span> + 3</span><span>AgNO</span><span>3</span><span>= </span><span>Ag</span><span>3</span><span>PO</span><span>4 </span><span>↓ +3 </span><span>NaNO</span><span>3 фосфат ион.</span>
M(р-ра)=25+275=300г
W=m(в-ва)/m(р-ра) *100\%=25/300 *100\%=8,3\%
1) СН4+С2Н4=С3Н8
2) С3Н8+Сl2=С3Н7Сl+НСl
3) 2C3H7Cl + 2Na = C6H14 +2NaCl
4)2C6H14 +19O2 = 12 CO2 + 14 H2O
Х=C6H14