Define potassium permanganate to reach the purple endpoint

Assignment Help Chemistry

Reference no: EM13178382

Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a ceramic vase for its WO3 content, a 10.25 g sample of the vase was ground and reduced with Pb(Hg) to convert any WO3 to W3 . The resulting W3 was transferred to 500.0 mL of 1.00 M HCl. A 100.00 mL aliquot of the HCl solution required 13.98 mL of 0.08485 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.08 mL. Balance the reaction below and determine the percent WO3 in the ceramic sample.

Reference no: EM13178382

Questions Cloud

Define filtration of the hot saturated solution : why is a stemless funnel recommended for filtration of the hot saturated solution? 2. in your buchner funnel, can you use filter paper that is to big for the funnel and curls up around the edges? why?

Explain driving forces behind the tendency : Based on the Hume-Rothery Rules, speculate on the possible driving forces behind the tendency for ordering in this system.

Define property between sodium benzoate and benzoic acid : Your observations should reveal a difference in at least one property between sodium benzoate and benzoic acid. What property was that, and what observation will reveal the difference?

Calculate the annual equivalent of each ae or eav : Calculate the NPV of each project and calculate the annual equivalent of each (AE or EAV)

Define potassium permanganate to reach the purple endpoint : aliquot of the HCl solution required 13.98 mL of 0.08485 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.08 mL. Balance the reaction below and determine the percent WO3 in the ceramic sample.

What is the probability of randomly selecting a student : What is the probability of randomly selecting a student who is female or prefers Digital Art?

Explain if a diamond consisting of ten sextillion : If a diamond consisting of ten sextillion "randomly-selected" carbon atoms (roughly a one-Karat diamond) were placed on an anallytical balance, the balance would read.

How many cars should you randomly sample : You believe the figure is no higher than 0.40. If you want the error of the confidence interval to be no greater than .03, how many cars should you randomly sample? Use a 90% level of confidence.

Evaluate the arguments for and against regulation : Discuss the above quotation. Explain and evaluate the arguments for and against regulation. What is your opinion of the current level of accounting regulation?

User Account

All Pages