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X.中含有三价元素 X.可能是Fe2(SO4 )3 Y.中一定含有钠元素 Y.可能是NaNO3
X中含有三价元素 X可能是Fe2(SO4)3 Y中一定含有Na元素 Y可能是NaNO3
该反应属于复分解反应 Y.中不一定含有钠元素 X.一定是熟石灰 X.中阴离子化合价是—1价
1molX与NaOH溶液反应,最多消耗3 mol NaOH X.、Y.都有较强的水溶性 X.、Y.都能使FeCl3溶液变色 X.、Y.的水解产物有可能发生聚合反应
CO2(g)+NaOH(aq)=NaHCO3(aq) ΔH=-(2y-x)kJ/mol CO2(g)+NaOH(aq)=NaHCO3(aq) ΔH=-(2x-y)kJ/mol CO2(g)+NaOH(aq)=NaHCO3(aq) ΔH=-(4x-y)kJ/mol 2CO2(g)+2NaOH(l)=2NaHCO3(l) ΔH=-(8x-2y)kJ/mol
CO2(g) + NaOH(aq) = NaHCO3(aq) △H.= - (2y-x) kJ·mol-1 CO2(g) + NaOH(aq) = NaHCO3(aq) △H.= - (4x-y) kJ·mol-1 CO2(g) + NaOH(aq) = NaHCO3(aq) △H.= - (2x-y) kJ·mol-1 CO2(g) + NaOH(aq) = NaHCO3(aq) △H.= - (8x-2y) kJ·mol-1
CO2(g) + NaOH(aq) = NaHCO3(aq) H= -(2y-x) kJ/mol CO2(g) + NaOH(aq) = NaHCO3(aq) H= -(2x-y) kJ/mol CO2(g) + NaOH(aq) = NaHCO3(aq) H= -(4x-y) kJ/mol 2CO2(g) + 2NaOH(l) = NaHCO3(l) H= -(8x-2y) kJ/mol
CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(2y-x) kJ/mol CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(2x-y) kJ/mol CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(4x-y) kJ/mol 2CO2(g)+2NaOH(l)===2NaHCO3(l) ΔH.=-(8x-2y) kJ/mol
CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(2y-x) kJ·mol-1 CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(2x-y) kJ·mol-1 CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH.=-(4x-y) kJ·mol-1 CO2(g)+2NaOH(l)===2NaHCO3(l) ΔH.=-(8x-2y) kJ·mol-1
该反应属于复分解反应 Y中一定含有钠元素 X一定是熟石灰 X中阴离子化合价是-1价
CO2(g)+NaOH(aq)====NaHCO3(aq) ΔH.=-(2y-x) kJ·mol-1 CO2(g)+NaOH(aq)====NaHCO3(aq) ΔH.=-(2x-y) kJ·mol-1 CO2(g)+NaOH(aq)====NaHCO3(aq) ΔH.=-(4x-y) kJ·mol-1 CO2(g)+NaOH(l)====NaHCO3(l) ΔH.=-(8x-2y) kJ·mol-1
X.中含有三价元素 X.可能是Fe2(SO4 )3 Y.中一定含有钠元素 Y.可能是NaNO3
CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(2y﹣x) kJ•mol﹣1 CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(4x﹣y) kJ•mol﹣1 CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(2x﹣y) kJ•mol﹣1 CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(8x﹣2y) kJ•mol﹣1
该反应属于复分解反应 Y.中一定含有钠元素 X.一定是熟石灰 X.中阴离子化合价是-1价
CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH=-(2y-x)kJ·mol-1 CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH=-(2x-y)kJ·mol-1 CO2(g)+NaOH(aq)===NaHCO3(aq) ΔH=-(4x-y)kJ·mol-1 2CO2(g)+2NaOH(l)===2NaHCO3(l) ΔH=-(8x-2y)kJ·mol-1
若为NaOH与Na2CO3的混合物,0—a段的反应只有一个 若为NaOH与NaHCO3的混合物,0—a段的反应只有一个 两种固体中Na2CO3与NaHCO3的物质的量相同 若为NaOH与Na2CO3的混合物,a=2
CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(2y﹣x)kJ·mol﹣1 CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(2x﹣y)kJ·mol﹣1 CO2(g)+NaOH(aq)=NaHCO3(aq)△H=﹣(4x﹣y)kJ·mol﹣1 2CO2(g)+2NaOH(aq)=2NaHCO3(aq)△H=﹣(8x﹣y)kJ·mol﹣1
CO2(g)+NaOH(aq)==NaHCO3(aq) ΔH=-(2y-x) kJ/mol CO2(g)+NaOH(aq)==NaHCO3(aq) ΔH=-(2x-y) kJ/mol CO2(g)+NaOH(aq)==NaHCO3(aq) ΔH=-(4x-y) kJ/mol CO2(g)+2NaOH(l)==2NaHCO3(l) ΔH=-(8x-2y) kJ/mol
CO2(g)+NaOH(aq) === NaHCO3(aq);△H=-(2y-x) kJ·mol-1 CO2(g)+NaOH(aq) === NaHCO3(aq);△H=-(2x-y) kJ·mol-1 CO2(g)+NaOH(aq) === NaHCO3(aq);△H=-(4x-y) kJ·mol-1 2CO2(g)+NaOH(1) === NaHCO3(1);△H=-(8x-2y) kJ·mol-1
CO2(g)+NaOH(aq)=NaHCO3(aq) △H=-(2y-x)kJ・mol―1 CO2(g)+NaOH(aq)=NaHCO3(aq) △H=-(2x-y)kJ・mol―1 CO2(g)+NaOH(aq)=NaHCO3(aq) △H=-(4x-y)kJ・mol―1 2CO2(g)+2NaOH(aq)=2NaHCO3(aq) △H=-(8x-2y)kJ・mol―1