States of Matter
1. This question has 3 part(s).
1.1. Ammonium chloride decomposes in a reversible reaction. The equation for this reaction is
NH4Cl (s) NH3 (g) + HCl (g)
State how the equation shows that the reaction is reversible.
1.2. Some ammonium chloride is heated gently in a test tube.
The diagram shows the test tube after it has been heated gently for a short time.
i) Identify solid X and the two gases formed in region Y of the test tube.
Solid X ................................................................................................
Gases at Y ..................................................................................................
(2)
ii) Which change of state occurs in the test tube during heating?
(1)
☐ | A | condensing |
☐ | B | evaporating |
☐ | C | melting |
☐ | D | subliming |
1.3. An experiment involving ammonium chloride can be used to show the process of diffusion.
The diagram shows the apparatus at the start of the experiment.
At the end of the experiment, a white solid forms in the test tube.
Explain which position, A, B or C, shows where the white solid forms.
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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