欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    GMW GMW16625-2011 Preparation of Acid Rain Solution Issue 1 English《酸雨溶液的制备 第1次出版(英文版本)》.pdf

    • 资源ID:757817       资源大小:35.39KB        全文页数:3页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    GMW GMW16625-2011 Preparation of Acid Rain Solution Issue 1 English《酸雨溶液的制备 第1次出版(英文版本)》.pdf

    1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16625 Preparation of Acid Rain Solution Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: North American Engineering Standards Page 1 of 3 1 Scope Note: Nothing in this standard supercedes applicable laws

    2、and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This standard covers the procedure for making the acid rain solution used in GMW14701, Resistance of Coatings to Chemical Etching and Distortion. 1.2 Fo

    3、reword. Not applicable. 1.3 Applicability. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D1193 2.2 GM Standards/Specifications. GMW14701 2.3 Additional References. None. 3 Resources 3.1 Fac

    4、ilities. Not applicable. 3.2 Equipment. 3.2.1 Balance capable of measuring to 0.01 g. 3.2.2 Volumetric flasks, 300 ml and 1000 ml. 3.2.3 Ice bath. 3.2.4 Standardized pH meter. 3.3 Test Vehicle/Test Piece. Not applicable. 3.4 Test Time. Not applicable. 3.5 Materials. 3.5.1 Concentrated sulfuric acid,

    5、 95 to 98% concentration. All acids shall be reagent grade. 3.5.2 Concentrated nitric acid, 70 to 72% concentration. All acids shall be reagent grade. 3.5.3 Concentrated hydrochloric acid, 35 to 40% concentration. All acids shall be reagent grade. 3.5.4 Degassed, distilled, deionized water (ASTM D11

    6、93, Type IV). 3.6 Formulas. 3.6.1 The 1 N acid stock solution should be 0.62 N sulfuric acid (H2SO4); 0.32 N nitric acid (HNO3); 0.06 N hydrochloric acid (HCl). See Table 1 for acid characteristics. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Res

    7、aleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16625 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 2 of 3 Table 1: Acid Characteristics Name Molecular Weight (g/mole) Equivalent Weight (g/equivalent) Concentr

    8、ation Range % Sulfuric Acid 98 49 95 to 98 Nitric Acid 63 63 70 to 72 Hydrochloric Acid 36.5 36.5 35 to 40 3.6.2 Calculation of Weight of Concentrated Acid for Mixture (g). 3.7 Test Required Information. Not applicable. 3.8 Personnel/Skills. Not applicable. 4 Procedure for Preparation of a 1 N Acid

    9、Stock Solution 4.1 Preparation. 4.1.1 To 300 mL of degassed, distilled, deionized water in a 1000 mL volumetric flask, slowly add the specified grams of sulfuric acid. In order to minimize heating, the volumetric flask should be surrounded by ice (ice bath). The flask should be swirled during the ad

    10、dition. 4.1.2 Allow the contents to cool. 4.1.3 Follow paragraphs 4.1.1 and 4.1.2 for the nitric acid and hydrochloric acid. 4.1.4 Add the distilled water to within 50 mL of the mark. Remove the flask from the ice bath and allow the contents to return to room temperature. Dilute to volume. This make

    11、s a solution of approximately pH 0. 4.1.5 Obtain higher pH solutions by standard dilution of this stock solution. The final pH can be adjusted to exactly the desired value with either 2 N HCl or 1 N NaOH (Sodium Hydroxide). Table 2 shows sample dilutions: Table 2: Sample Dilutions Starting pH mL of

    12、Starting pH Final Volume Final pH 0 10 100 1 0 10 1000 2 2 10 100 3 2 10 1000 4 3 10 100 4 4.1.6 Verify that the pH is properly adjusted on a calibrated pH meter. 4.2 Conditions. 4.2.1 Environmental Conditions. Not applicable. 4.2.2 Test Conditions. Deviations from the requirements of this standard

    13、shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. Not applicable. 5 Data 5.1 Calculations. Not applicable. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Resal

    14、eNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16625 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 3 of 3 5.2 Interpretation of Results. Not applicable. 5.3 Test Documentation. Not applicable. 6 Safety This sta

    15、ndard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of r

    16、egulatory limitations prior to use. 7 Notes 7.1 Glossary. g Gram HCl Hydrochloric Acid HNO3 Nitric Acid H2SO4 Sulfuric Acid N Normal NaOH Sodium Hydroxide 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., a

    17、s follows: Test to GMW16625 9 Release and Revisions This standard was originated in May 2011. It was first approved by the Primer, Color & Topcoat Global Tech Team in August 2011. It was first published in August 2011. Issue Publication Date Description (Organization) 1 AUG 2011 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


    注意事项

    本文(GMW GMW16625-2011 Preparation of Acid Rain Solution Issue 1 English《酸雨溶液的制备 第1次出版(英文版本)》.pdf)为本站会员(progressking105)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开