8. A student was asked to find the acid and basic radicals in six simple salts provided to him labeled as A,B,C,D,E and F. When he examined them, he observed that sample B was blue in colour and the remaining five salts were white. Answer the following questions. a. Why is concentrated HCl used in performing the flame test and not any other concentrated acid? b. What clue does this blue colour give about sample B? c. What is the importance of a negative test in salt analysis?
8. A student was asked to find the acid and basic radicals in six simple salts provided to him labeled as A,B,C,D,E and F. When he examined them, he observed that sample B was blue in colour and the remaining five salts were white. Answer the following questions.
a. Why is concentrated HCl used in performing the flame test and not any other concentrated acid?
b. What clue does this blue colour give about sample B?
c. What is the importance of a negative test in salt analysis?
d. The student is aware that he has to classify the anions into groups. What is the basis of this classification?
e. Describe one test which distinguishes a bromide ion from a nitrate ion.
f. The student observed that when dil HCl was added to a pinch of sample A. it gave brisk effervescence which turned lime water milky, while sample E gave a gas with rotten egg smell with the same reagent. Identify the acid radicals in sample A and E from the above observation and write the balanced equations involved
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