Question

we precate when heated with d be prette From this data the investig e stigator From the above la data, what are component of many dyw eds Compound in gypsum? n o -4922CWhite curly Pi keltagnes Agen ACLES 2. write a procedure to determine the compound present. HINT: we used aque For questions 8-9 write a procedure to determine the c Sortions in lab, so if you are starting with a solid you should dissolve it in watert 8. has m common substances that are used in the de are sodium a Two common substances that are used in the iting salt. Outline a short (OCR ST) and Caicium chloride You have a bag of a substance sold as melting salt. 920 procedure that will identify which type of salt is present. 9. A balance is checked before a laboratory session and found to be accurate and clean. After the laboratory, a spilled white solid is found on the balance. The only white substances available in the laboratory were barium chloride and sodium sulfate. Outline a procedure to determine which of the solids has been spilled. Why is it important to know which of the two solids is on the balance before the spill is cleaned up? 164 2019

Answer 1

8. we just need to do o a a flame test flame test for for identifying idenne of it is Nach, to a seen. If it is cada observed. bright yellow a brick-red flame flame shall shall be a. Here also flame test can distinguish between the two halte. As told earlier Nace shall show a bright yellow flame. But if Balla is present an apple-green flame shall be obtained. However, it is important to know the .. identity of the salt as Barium chloride is toxic in nature. Hence, if it is Barium salt removed must be Chloride, the by wearing gloves .