Сzn+hcl = naohф+hcl= k2co3+hcl= k2so4+hcl= naoh+h2so4= naoh+fecl3= cuso4+naoh= cuso4+bacl2=
256
261
Ответы на вопрос:
zn + 2hcl= zncl2 + h2
k2co3 + 2hcl = 2kcl + h2co3
k2so4 + 2hcl = 2kcl + h2so4
2naoh+h2so4= na2so4 + 2h2o
3naoh+fecl3= 3nacl + fe(oh)3
cuso4+2naoh= cu(oh)2 + na2so4
cuso4+bacl2= cucl2 + baso4
zn+2hcl = zncl2 +h2
naohф+hcl=nacl +h2o
k2co3+2hcl=kcl2 + co2 + h2o
k2so4+2hcl=kcl2 + h2so4
2naoh+h2so4=na2so4 + 2h2o
3naoh+fecl3=3nacl + fe(oh)3
cuso4+2naoh=cu(oh)2 + na2so4
cuso4+bacl2=baso4+cucl2
1)ch3-ch=ch2 +h2 > ch3-ch2-ch3(кат-ni). 2)ch3-ch2-ch3 + br2 > ch3-cbr2-ch3(t, свет)
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