Melcik molar 100-1000 molarity -weight 1- How to prepare 0.2 M of K₂CO3 (M.W 138 g/mole) in 100 ml distilled water. M

Calculate the sum of coefficients for the following equation balanced for acidic conditions. XO4-2 + Y23+ → YO3+ + XO2-

Calculating Avogadro’s Number Using ElectrochemistryBackgroundAs discussed in lecture, electrochemistry allows stoichiometric calculations to be relatedto current and time, if a chemical equation that relates electrons to reactants and products isknown. Recall that electrolysis involves using an electrical current to decompose a compoundinto simpler substances. This particular experiment will involve the electrolysis of a sulfuric acidsolution to generate hydrogen gas. By measuring the amount of hydrogen produced by thecurrent and length of time of the electrolysis, it is possible to calculate a value for the Faradayconstant and thus also Avogadro’s number. The amount of hydrogen is determined by utilizingthe ideal gas law (PV = nRT) to determine the number of moles of hydrogen produced in theelectrolysis.The amount of charge that has passed through the solution is measured in coulombs(C). It is calculated by measuring the current (in amperes, A) that has passed through thesolution…

Calculating Avogadro’s Number Using ElectrochemistryBackgroundAs discussed in lecture, electrochemistry allows stoichiometric calculations to be relatedto current and time, if a chemical equation that relates electrons to reactants and products isknown. Recall that electrolysis involves using an electrical current to decompose a compoundinto simpler substances. This particular experiment will involve the electrolysis of a sulfuric acidsolution to generate hydrogen gas. By measuring the amount of hydrogen produced by thecurrent and length of time of the electrolysis, it is possible to calculate a value for the Faradayconstant and thus also Avogadro’s number. The amount of hydrogen is determined by utilizingthe ideal gas law (PV = nRT) to determine the number of moles of hydrogen produced in theelectrolysis.The amount of charge that has passed through the solution is measured in coulombs(C). It is calculated by measuring the current (in amperes, A) that has passed through thesolution…

Write a balanced half-reaction for the oxidation of solid iodine dioxide (IO,) (10) to iodate jon in basic aqueous solution. Be sure to add physical state symbols where appropriate. Submit Assigni Continue O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use I Privacy Ace

Which of the following metals will NOT dissolve in nitric acid or hydrochloric acid? Ag Cu Au Zn Ni Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Return to Assignment Provide Feedback

For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 3. How would you prepare a complete anlaysis procedure using KMnO4 as the oxidant instead of K2CrO7? Include sample and solution preparation, approximate weights of samples and reagents, procedure and chemical reactions. In particular what is the purpose of the Zimmerman Reinhardt Reagent?

Why do both Reference and Indicator electrodes need in Potentiometric titration? answer at your own words ans answer to the point not any irrelevant words

Calculate the sum of coefficients for the following equation balanced for acidic conditions. XO93- + Y22+ → YO2- + XO2-

gine.html?ClassID=1563099459# Molten KF is electrolyzed by a current of 8.00 A for 18.5 hours. What mass of solid K is produced during this reaction? [?]gK Mass of K (g) Enter