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16 October, 09:29

A spoonful of dry baking powder is added to a glass of cold water and identical quantity is added to a glass of hot water which of the following results could occure

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  1. 16 October, 09:36
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    Bubbles will form first in the hot water.*

    A general rule in chemistry is that reactions proceed faster

    at higher temperatures. Thus, the acid/base reaction which

    produces the carbon dioxide bubbles you see, will happen

    faster at a higher temperature.

    *These results may depend upon the type of baking powder

    you are using. There are actually three types: fast acting, slow

    acting, and double-action. Fast acting works at room temperature,

    as soon as the powder gets wet. Slow acting only works at oven

    temperatures, and would probably not do much even in hot water.

    And double-action works a little at both high and low temperatures.
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