Question

取质量为14.8 g 的碳酸钠和碳酸氢钠的固体混合物,与100ml2.50mol/l的盐酸恰好完全反应 不再放出气体

1.求原混合物中NaCO3的质量分数

2.若100ml 2.50mol·L-1的盐酸是用标签如下所示的浓盐酸制得，则需该浓盐酸的体积是多少？

3.若取等质量的原混合物配成溶液，逐滴滴入90ml 2.50mol·L-1的盐酸，并不断搅拌求生成的气体在标准状况下的气体

容量：500ml 分析纯

品名：浓盐酸

相对分子质量36.5

质量分数：0.365

密度：1.18g

Answer 1

1.先分别设Na2CO3和NaHCO3的物质的量为x，y则有：
2x+y=0.25
106x+84y=14.8
然后解出结果
2.约为：0.0212L（先用密度乘以1000，得出1L浓盐酸的质量，然后再乘以质量分数得出HCl的质量，再将HCl的质量除以其摩尔质量即为浓盐酸的浓度，然后用稀盐酸的总物质的量除以浓盐酸的浓度即为浓盐酸的用量

Answer 2

Zhang
10 13, the largest financial institutions in Chengdu - Chengdu Rural Credit Corporation (hereinafter referred to as "Chengdu Rural Credit Cooperatives"), rural commercial banks to build Chengdu CBRC formally approved. And is expected to end, following the Bank of Chengdu after listing, the Chengdu is also about the local financial flagship Gaixian changing of the guard.
just less than a year,nike heels, the city as a unit from a unified legal person shares of the company restructuring, to be granted to build agricultural businesses, rural credit cooperatives reform in Chengdu is not destined to take the unusual way.
2000 was undoubtedly the first year of the reform of rural credit cooperatives in Chengdu. That year,dunk high heels, Chengdus rural credit cooperatives to cooperative form for the first time in the history of financial reform in rural areas of Chengdu. But less than a decade, breaking the county association of legal persons formed the basis of a unified, Chengdu has become the countrys first rural credit cooperatives to municipal association unified municipal corporation of the stock of rural credit cooperatives unions. Soon, it will become the countrys special approval of the last several municipal agricultural firm one.
up: transform agricultural firms
"firm only two steps to become farmers." Chengdu Finance Office official told reporters, before the most to build the core of the checked assets, raise capital and to resolve non-performing assets has been successfully completed and is currently being prepared and the first inaugural meeting was held general meeting of shareholders, to the CBRC opened an application, the final step is to apply for approval after formally.
According to relevant sources of rural credit cooperatives in Chengdu, capital of the company proposed at 58.98 million shares, the promoters have collected 18,829, of which 32% of state-owned enterprises,nike dunk heels, private enterprises accounted for 41%, 3.8% of workers,griffey shoes sale, social individuals accounted for 23.2% . Capital structure than had been significantly improved; the end of September this year, the company has from the beginning of non-performing loan rate of 5.65%, a substantial decline of 1.27% has been achieved when the rural commercial banks non-performing loan rate of no more than 5% of the relevant conditions.
However, as with most of the restructuring of rural credit cooperatives, rural credit cooperatives in Chengdu is also undergoing restructuring process from resolving non-performing assets, capital structure adjustment pains.
before the restructuring, the Central Peoples Bank was 2.179 billion yuan through the issuance of special bills payment, equal exchange of non-performing loans; and Chengdu City, county levels of government also adopted the replacement of assets, reorganization of inventory and cash return,ken griffey shoes, etc., to resolve the historical burden of 16.3 million.
the end of 2008, rural credit cooperatives registered capital of Chengdu,king griffey shoes, eventually identified as 3.869 billion yuan, and is divided into equal shares,jordan heels, par value of one yuan per share, all of the common stock. Then in January 2009 can be transformed into joint-stock company approved.
Nevertheless, rural credit cooperatives registered capital of Chengdu, there are still more than 10% of the mortgage of land assets, which was once the desire to transition, agricultural firms dystocia.
Subsequently, Chengdu, state-owned land through cash replacement repossessed assets; and company share disposal program: that shareholders be reduced by providing funds or shares in proportion to the form of funding for the purchase part of the bad assets, the assets of Chengdu Rural Credit Cooperatives The resulting texture is also a substantial increase, and received a positive social capital and other private subscription.
10 at the end of this year, Chengdu, rural credit cooperatives exist, the size of loans reached 100.145 billion yuan, respectively, 66.641 billion yuan,dunk heels, Chengdu banking financial institutions were ranked fourth and fifth in the 15 sub-provinces class city ranks third in the rural credit cooperatives.
down: bottom "three rural"
In fact, the restructuring of rural credit cooperatives in Chengdu and other parts of the country compared to the samples with different meanings.
May this year, following the 2007 success of Chengdu approved comprehensive reform experimental zone,griffeys, the State Council again approved the "Chengdu urban and rural comprehensive reform pilot program in general." Among them the development of rural financial service system,king griffey shoes, the program clearly stated: to promote the reform of rural credit cooperatives, the regulatory approval,new jordan heels, the formation of Chengdu Rural Commercial Bank.
which undoubtedly makes the restructuring of rural credit cooperatives in Chengdu once again become the State Department special Pixia pilot urban and rural areas of Chengdu an important one.
"as the main force of rural financial market in Chengdu, the establishment of joint-stock company, marking the reform of rural credit cooperatives in Chengdu, the tide has a step ahead, once again reflects the spirit of Chengdu pilot." Chengdu Finance Office deputy director Liang Qizhou said so. The Chengdu municipal association of rural credit cooperatives are allowed to a unified legal basis, is based on urban and rural areas of Chengdu under the policy guidance.
The Third Plenary Session adopted the "CPC Central Committee on rural reform and development of a number of major issues" clear demands: "to improve the corporate governance structure of rural credit cooperatives,nike dunk heels, to keep the county (city) legal status of social stability, to play for the peasants dominant role. "
This means that, after all the restructuring of rural credit cooperatives will be the county (city) community-based cascade started. Chengdu Rural Credit Cooperatives "exception" to the city as corporate units, obviously with Chengdus efforts to promote the integration of urban and rural areas are not unrelated.
However, despite the policy of rural credit cooperatives in Chengdu received special support, but there is still the State Department and Banking Department of their special requirements. That enhance the service "three rural" county economic and urban and rural development functions.
Accordingly, Chengdu, rural credit cooperatives has developed "to support" three rural "development and the proportion of agricultural loans in 2009-2011 plan."
plan accordingly show the size of its loans to agriculture-related loans accounted for 60%, and annual growth rate of not less than the overall level of credit growth. Which is located in the first circle of the city more than 30% of rural credit cooperatives, credit institutions funds for agriculture services; located in the outskirts of the rural credit cooperatives,jordan 4 high heels, the second circle of more than 55% of the credit institutions funds for agriculture services; The third circle is located in the outer suburbs more than 65% of rural credit cooperatives, credit institutions funds for agriculture services. While ensuring that no decline in the proportion of agriculture loans, loans to farmers to grow steadily in absolute terms.
the end of September this year,jordan shoes for women, Chengdu, rural credit cooperatives with total assets reached 110.6 billion yuan, 101.544 billion yuan of deposits, for the first time Tu Po Qian Yi Yuan , up 38.44% over the beginning, the loan balance of 66.898 billion yuan over the beginning increase of 33.14%; including agriculture-related loans 43.453 billion yuan, accounting for 64% of total loans, up 25% compared with the beginning.
Apart from this, according to reporter understanding, combined with the Chengdu rural land reform and property rights, tenure reform, Chengdu, rural credit cooperatives has also developed a "forest right mortgage" loan "of rural land and house property mortgages "Credit and other new varieties,nike shoes uk, and actively participate in the pilot reform of rural property rights. These will be the transformation of agricultural firms after the "three rural" support the new point.
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