Explain the formaldehyde content of a pesticide

Reference no: EM13230781

The formaldehyde content of a pesticide preparation was determined by weighing .3124g of liquid sample into a flask containing 50ml of .0996M NaOH and 50mL of 3%H2O2. On heating, the following reaction took place

OH- + HCHO-> HCOO- +2H2O

After cooling the excess base was titrated with 23.3mL of .0525M H2SO4. Calculate the percentage of HCHO( 30.026g/mol) in the sample

Reference no: EM13230781

Questions Cloud

Discribe the pedigrees and gene disease : Assume that the blue eyes in both families were caused by mutations in the same gene, and that there were no new mutations within the pedigrees

Explain the preparation of 3-chloro-3 ethylpentane : which one of the following represents the best method for the preparation of 3-chloro-3 ethylpentane?

Describe the methods your organization currently : Describe the methods your organization currently uses to reward, recognize, and manage the performance of its employees and explain how you measured the effectiveness and provide specific examples on how employee and business performance is enhanced.

Find flux density and electric field in all regions : A volume charge density of K Coulombs per cubic meter resides uniformly within the material of a long cylindrical shell whose inner radius is 1 m and whose outer radius is 3 m. Find D and E in all regions.

Explain the formaldehyde content of a pesticide : The formaldehyde content of a pesticide preparation was determined by weighing .3124g of liquid sample into a flask containing 50ml of .0996M NaOH and 50mL of 3%H2O2. On heating, the following reaction took place

Compute the pressure of the gas if its volume is changed : A sample of gas occupies a volume of 692 mL at 1.24 atm and 85 oC. Calculate the pressure of the gas if its volume is changed to 484 mL while its temperature is held constant.

Explain most reasonable structure for the starting alkane : Five constituionally isomeric monochlorides of molecular formula c6h13cl are formed (along with a mixture of dichlorides, trichlorides, etc.) What is the most reasonable structure for the starting alkane? why?

Find the information content of x and its efficiency : A source X produces symbols A, B, C, D, and E with probabilities 0.5, 0.25, 0.125, 0.0625 and 0.0625 (a) Find the information content of X. (b) Give a fixed length code for X. Compute its efficiency. (c) Derive a Huffman code for X

Create scenario making purchase or develop use case diagram : You are developing the requirements for an online shopping system. To place an order, a user connects to the system, searches to find items to purchase, selects one or more items, and supplies credit card information to pay for them.

User Account

All Pages