下面转化关系是对物质的一种分类方法，可以帮助我们更好地认识物质的性质，找出各类物质之间的关系．单质

（1）若X是酸，符合转化关系，单质→氧化物→X→盐，推断为C

O2

CO2

H2O

H2CO3

NaOH

Na2CO3，S

O2

SO2

H2O

H2SO3

NaOH

Na2SO3；符合条件的三步反应的化学方程式C+O2

 点燃 

.

CO2，CO2+H2O=H2CO3 ，H2CO3+2NaOH=Na2CO3+2H2O；故答案为：C+O2

 点燃 

.

CO2，CO2+H2O=H2CO3 ；H2CO3+2NaOH=Na2CO3+2H2O（2）若X是碱，符合转化关系，单质→氧化物→X→盐，推断Na

O2

已赞过

已踩过

你对这个回答的评价是？

评论

收起

// 高质or满意or特型or推荐答案打点时间

window.iPerformance && window.iPerformance.mark('c_best', +new Date);

._4m59a3r{padding:30px 0 20px 42px;border:0;background-color:#fff;position:relative;zoom:1;margin-bottom:10px}._4m59a3r.ec-1841{padding:20px 0}._4m59a3r.ec-2246{padding:20px 0 10px}.ec-1841 ._44pkrw8{font-size:16px;margin-bottom:-5px}._44pkrw8{position:relative;overflow:hidden;line-height:25px;height:25px;color:#7a8f9a}._44pkrw8 h2{margin:0;padding:0}._44pkrw8:after{content: ;display:block;height:0;clear:both;visibility:hidden}a._53wjrpp{float:right;color:#666;text-decoration:none;font-size:12px;margin-left:8px}._3sjgky6{font-size:13px;line-height:normal;color:#666;line-height:20px;margin-top:10px}._5qv9qjj{position:relative;margin-top:15px}._5qv9qjj h3{padding:0;font-weight:400}._5qv9qjj a{text-decoration:none}._5qv9qjj em{color:#d81419;font-style:normal}.ec-2246 ._5qv9qjj{margin-top:20px}._2md3yaj{margin-top:10px}._8tzhv8k{margin-top:24px}._2n9tg5c{display:block;width:auto;overflow:hidden}._2pgsygz,._3e8y5sz,._3qq8arb,._3snc425,._4r71dp9,._6hxazj8,._7n8mzey,._7wu6jbr,._25ypd8e,._58qg8g6,._78q33t7{position:relative;min-height:1px;float:left;box-sizing:border-box}._6hxazj8{width:8.33333333%}._78q33t7{width:16.6666666%}._4r71dp9{width:25%}._25ypd8e{width:33.33333333%}._58qg8g6{width:50%}._3snc425{width:58.3333333%}._7wu6jbr{width:66.66666667%}._3qq8arb{width:75%}._3e8y5sz{width:83.3333333%}._7n8mzey{width:91.66666667%}._2pgsygz{width:100%}._4xt2t91{float:right}body a._8r3sgmj,body div._8r3sgmj{font-family:Arial,Helvetica,sans-serif;text-decoration:none;color:#333;font-size:14px!important;line-height:19px;margin-bottom:10px;display:block}a._8r3sgmj:hover{color:#34b458;text-decoration:underline}a._8r3sgmj font{color:#34b458}a._8r3sgmj div{word-break:break-all}._2vp72m4{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}._37n8ad5{-webkit-line-clamp:2}._5waejsg,._37n8ad5{display:-webkit-box;word-break:break-all;word-wrap:break-word;-webkit-box-orient:vertical;overflow:hidden}._5waejsg{-webkit-line-clamp:3}._2htasef{display:-webkit-box;-webkit-line-clamp:4;word-break:break-all;word-wrap:break-word;-webkit-box-orient:vertical;overflow:hidden}body .ds4ghcq{font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:22px;transform:translateY(.4666666667em);padding-top:0;color:#7a8f9a;position:relative}body .ds4ghcq:before{content:;margin-top:-10px;display:block;height:0}body .ds4ghcq a{color:#7a8f9a;display:block}body .ds4ghcq a ._36v43n5{color:#666}body .ds4ghcq button{float:right;color:#38f;font-size:12px;background:#fff;border:1px solid;padding:7px 13px;border-radius:3px;line-height:12px;position:absolute;right:0;bottom:0}body .ds4ghcq ._2n4a8n5{margin-left:5px}body .ds4ghcq ._5pyvpnv{display:inline-block;width:22px;height:22px;line-height:0;vertical-align:middle;margin-right:7px;margin-top:-2px;border:1px solid #eee;border-radius:50%}._86c1h4n{position:absolute;right:0}.ds4ghcq .ec-showurl-line:hover{text-decoration:underline}.ds4ghcq .ec-showurl-line{color:#9eacb6}body .tqf6eu9{font-size:12px;line-height:22px;transform:translateY(.4166666667em);padding-top:0}body .tqf6eu9:before{content:;margin-top:-10px;display:block;height:0}body .tqf6eu9 a,body .tqf6eu9 div{color:#333}body .tqf6eu9 ._5cts8sp{font-size:15px;color:#999;line-height:25px}body .tqf6eu9 ._7rt4vyd{margin-right:5px}.tqf6eu9 font{color:#34b458}.ec-2246 .tqf6eu9 font{color:#c60a00}.ec-2246 .tqf6eu9{font-size:16px}.ec-2246 ._2cp3m46{position:relative}.ec-2246 ._2cp3m46:after{position:absolute;bottom:0;right:0;display:inline-block;padding-left:10px;padding-right:0;content:70B951FB67E5770B8BE660C5;color:#34b458;background-color:#fff}.ec-2246 ._2cp3m46:before{position:absolute;bottom:0;right:90px;width:47px;height:29px;content:;background-image:linear-gradient(270deg,#fff,hsla(0,0%,100%,0))}body ._29wz5ed{overflow:hidden;font-size:0;display:flex}body ._5cd6n94{min-width:35px;max-width:35px;margin-right:8px;vertical-align:top}body ._2nu45h5{width:100%;height:100%;background:url(//nv00.cdn.bcebos.com/nv01/static/ecom/img/pc/head-img-535c333798.png) no-repeat 50%;background-size:100% 100%}body ._2uvtfb6{height:35px;min-width:0}body .s1gjn5b{font-size:16px;color:#000;line-height:1;margin-bottom:8px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}body ._8vzghvm{color:#999;font-size:12px;line-height:1}body ._29wz5ed ._2msvcy6 img{width:100%}body ._29wz5ed ._4qfz8fz{margin-right:15px}body ._5cd6n94{min-width:40px;max-width:40px;border-radius:50%;overflow:hidden}body .s1gjn5b{margin-bottom:0;font-size:14px;color:#333;line-height:20px;font-weight:700}body ._8vzghvm{margin-top:3px;color:#9eacb6;line-height:17px}

郑州市首捷机械设备

广告

想了解生物质燃料，对比首捷机械再决定，实力大厂，让您少花冤枉钱，

www.shoujiejx.com

!function(t){use strict;function e(t,e){if(t){var n=(new Date).getTime(),r=new Image;t+=&rand=+(n+Math.random()),window.ecomLogImage||(window.ecomLogImage={}),window.ecomLogImage[--IMAGE+n]=r,e=e||{};var i=!1;r.onload=r.onerror=r.onabort=function(o){if(!e.charge)if(o&&load!==o.type){if(!i)return r.src=t,void(i=!0);errorin e&&e.error()}elseloadin e&&e.load();r.onload=r.onerror=r.onabort=null,window.ecomLogImage[--IMAGE+n]=null,r=null},r.src=t}}var n=function(t){returnobject==typeof t?null!==t:function==typeof t},r=function(t){if(!n(t))throw TypeError(t+ is not an object!);return t},i=function(t){if(null==t)throw TypeError(Can't call method on +t);return t},o=function(t){return Object(i(t))},a=Math.ceil,c=Math.floor,s=function(t){return isNaN(t=+t)?0:(t>0?c:a)(t)},u=Math.min,l=function(t){return t>0?u(s(t),):0},f=function(t){return function(e,n){var r,o,a=String(i(e)),c=s(n),u=a.length;return c=u?t?:void 0:(r=a.charCodeAt(c))56319||c+1===u||(o=a.charCodeAt(c+1))57343?t?a.charAt(c):r:t?a.slice(c,c+2):o-56320+(r-552960,f=new RegExp(t.source,s+g);(i=L.call(f,r))&&!((o=f.lastIndex)>u&&(c.push(r.slice(u,i.index)),i[Lt]>1&&i.index=l));)f.lastIndex===i.index&&f.lastIndex++;return u===r[Lt]?!a&&f.test()||c.push():c.push(r.slice(u)),c[Lt]>l?c.slice(0,l):c}:0.split(void 0,0)[Lt]?function(t,e){return void 0===t&&0===e?[]:n.call(this,t,e)}:n,[function(n,r){var i=t(this),a=null==n?void 0:n[e];return void 0!==a?a.call(n,i,r):o.call(String(i),n,r)},function(t,e){var a=i(o,t,this,e,o!==n);if(a.done)return a.value;var c=r(t),s=String(this),u=function(t,e){var n,i=r(t).constructor;return void 0===i||null==(n=r(i)[kt])?e:X(n)}(c,RegExp),f=c.unicode,p=(c.ignoreCase?i:)+(c.multiline?m:)+(c.unicode?u:)+(Pt?y:g),d=new u(Pt?c:^(?:+c.source+),p),v=void 0===e?4294967295:e>>>0;if(0===v)return[];if(0===s.length)return null===S(d,s)?[s]:[];for(var g=0,m=0,y=[];m=0&&{top:a,bottom:s,left:u,right:l,width:f,height:h})))break;d=c(d)}return p}},n.prototype._getRootRect=function(){var e;if(this.root)e=o(this.root);else{var n=t.documentElement,r=t.body;e={top:0,left:0,right:n.clientWidth||r.clientWidth,width:n.clientWidth||r.clientWidth,bottom:n.clientHeight||r.clientHeight,height:n.clientHeight||r.clientHeight}}return this._expandRectByRootMargin(e)},n.prototype._expandRectByRootMargin=function(t){var e=this._rootMarginValues.map((function(e,n){returnpx==e.unit?e.value:e.value*(n%2?t.width:t.height)/100})),n={top:t.top-e[0],right:t.right+e[1],bottom:t.bottom+e[2],left:t.left-e[3]};return n.width=n.right-n.left,n.height=n.bottom-n.top,n},n.prototype._hasCrossedThreshold=function(t,e){var n=t&&t.isIntersecting?t.intersectionRatio||0:-1,r=e.isIntersecting?e.intersectionRatio||0:-1;if(n!==r)for(var i=0;i0?u(s(t),):0},f=function(t){return function(e,n){var r,o,a=String(i(e)),c=s(n),u=a.length;return c=u?t?:void 0:(r=a.charCodeAt(c))56319||c+1===u||(o=a.charCodeAt(c+1))57343?t?a.charAt(c):r:t?a.slice(c,c+2):o-56320+(r-552960,f=new RegExp(t.source,s+g);(i=L.call(f,r))&&!((o=f.lastIndex)>u&&(c.push(r.slice(u,i.index)),i[Lt]>1&&i.index=l));)f.lastIndex===i.index&&f.lastIndex++;return u===r[Lt]?!a&&f.test()||c.push():c.push(r.slice(u)),c[Lt]>l?c.slice(0,l):c}:0.split(void 0,0)[Lt]?function(t,e){return void 0===t&&0===e?[]:n.call(this,t,e)}:n,[function(n,r){var i=t(this),a=null==n?void 0:n[e];return void 0!==a?a.call(n,i,r):o.call(String(i),n,r)},function(t,e){var a=i(o,t,this,e,o!==n);if(a.done)return a.value;var c=r(t),s=String(this),u=function(t,e){var n,i=r(t).constructor;return void 0===i||null==(n=r(i)[kt])?e:X(n)}(c,RegExp),f=c.unicode,p=(c.ignoreCase?i:)+(c.multiline?m:)+(c.unicode?u:)+(Pt?y:g),d=new u(Pt?c:^(?:+c.source+),p),v=void 0===e?4294967295:e>>>0;if(0===v)return[];if(0===s.length)return null===S(d,s)?[s]:[];for(var g=0,m=0,y=[];m=0&&{top:a,bottom:s,left:u,right:l,width:f,height:h})))break;d=c(d)}return p}},n.prototype._getRootRect=function(){var e;if(this.root)e=o(this.root);else{var n=t.documentElement,r=t.body;e={top:0,left:0,right:n.clientWidth||r.clientWidth,width:n.clientWidth||r.clientWidth,bottom:n.clientHeight||r.clientHeight,height:n.clientHeight||r.clientHeight}}return this._expandRectByRootMargin(e)},n.prototype._expandRectByRootMargin=function(t){var e=this._rootMarginValues.map((function(e,n){returnpx==e.unit?e.value:e.value*(n%2?t.width:t.height)/100})),n={top:t.top-e[0],right:t.right+e[1],bottom:t.bottom+e[2],left:t.left-e[3]};return n.width=n.right-n.left,n.height=n.bottom-n.top,n},n.prototype._hasCrossedThreshold=function(t,e){var n=t&&t.isIntersecting?t.intersectionRatio||0:-1,r=e.isIntersecting?e.intersectionRatio||0:-1;if(n!==r)for(var i=0;i