Identifying the Products of Chemical Reactions
1. This question has 2 part(s).
1.1. A student wants to identify the ions contained in a solid, X.
She dissolves the solid in some water and then does some tests on the solution.
Look at the table of her results.
Test | Method | Observations |
Test 1 | Flame test | Red flame seen |
Test 2 | Add dilute sodium hydroxide solution | White precipitate forms which re-dissolves in excess sodium hydroxide solution |
Test 3 | Add dilute nitric acid, then silver nitrate solution | White precipitate forms |
Test 4 | Add dilute hydrochloric acid, then barium chloride solution | No change – mixture stays clear and colourless |
Describe how the student does the flame test in Test 1.
You may draw a labelled diagram to help your answer.
1.2. The student thinks that solid X contains only lithium ions, Li+, and sulfate ions, SO42-.
Use her results to explain if she is correct.
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
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