Question

In a typical fireworks device, the heat of the reaction between a strong oxidizing agent, such as KClO₄, and an organic compound excites certain salts, which emit specific colors. Strontium salts have an intense emission at 641 nm, and barium salts have one at 493 nm. (a) What colors do these emissions produce? (b) What is the energy (in kJ) of these emissions for 5.00 g each of the chloride salts of Sr and Ba? (Assume that all the heat released is converted to light emitted.)

Answer 1

Answer:

• a) The wavelength 641nm of strontium emits a red color in visible spectrum of strontium salts

• The wavelength 493nm of Barium emits a green color in visible spectrum of barium salts.

Explanation:

The detailed and step by step calculation is as shown in the attachment.