Hot Ice from baking soda and vinegar

Have you ever made a hot ice?
Now, we discuss the preparation of a hot ice from baking soda and vinegar. It is a cool and safe experiment we can do at our own home. A salt heater works on the basis of a hot ice. once you press the heater the capsule with fluid heats up and turns solid!

HOT ICE FROM BAKING SODA AND VINEGAR

Reagents and equipment:

• Baking soda (sodium bicarbonate) 75 gm
• 9% solution of acetic acid (Vinegar) 500 ml
• water 50 ml
• source-pan
• hot plate
• glass container
• beaker
• spatula

Step by step procedure

Step 1 : Take backing soda in a source-pan

Step 2 : Pour  vinegar to it and stir well. Here baking soda and vinegar combine to form sodium                        acetate
Step 3 : Evaporate the resulting solution and breakup the all lumps
Step 4 : Heat the powder in water bath and add a little of water to it. The sodium acetate solution                      becomes super saturated as it cools.
Step 5 : On touching the solution with finger the sodium acetate crystallizes soon by release of heat

                                                                 Our hot ice is ready!

Process 

Here acetic acid and sodium bicarbonate react to form sodium acetate, which has a amazing ability. It dissolves in its on crystallized water when heated on cooling a super saturated solution forms and is very unstable and crystallizes for a small change. When we touch the solution with a finger it turns to "hot ice" that is the crystal hydrate. For every 100 gm of sodium acetate 66 gm water is required 

NaHCO3 + CH3COOH = CH3COONa + CO2 + H2O