10th Class Science Solved Paper - Science-2015 Delhi Set-I

List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube. Write chemical equation for the reaction that occurs.

Answer:

Two observations observed are:

            (a) Brisk effervescence are evolved.

            (b) Evolution of a colourless and odourless gas.

            \[C{{H}_{3}}COOH + NaHC{{O}_{3}}\to C{{H}_{3}}COONa + {{H}_{2}}O +C{{O}_{2}}\]

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10th Class Science Solved Paper - Science-2015 Delhi Set-I

question_answer List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube. Write chemical equation for the reaction that occurs.

List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube. Write chemical equation for the reaction that occurs.