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  1. Asked: In:

    Define foaming capacity of soap.

    Ikshita Bhatti

    Foaming capacity of soap is the ability of soap to form lather (foam) with water.

    Foaming capacity of soap is the ability of soap to form lather (foam) with water.

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  2. Asked: In:

    What is the advantage of soft water?

    Ikshita Bhatti

    It forms foam quickly, and hence less soap is needed for washing .

    It forms foam quickly, and hence less soap is needed for washing .

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  3. Asked: In:

    What are the causes of hardness of water?

    Best Answer
    Ikshita Bhatti

    Temporary hardness of water is due to the presence of calcium and magnesium bicarbonates in it. Permanent hardness of water is due to the presence of chlorides and sulphates of calcium and magnesium in it.

    Temporary hardness of water is due to the presence of calcium and magnesium bicarbonates in it. Permanent hardness of water is due to the presence of chlorides and sulphates of calcium and magnesium in it.

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  4. Asked: In:

    Explain why soap does not give lather with hard water easily.

    Best Answer
    Ikshita Bhatti

    Hard water contains calcium ions and magnesium ions. Soap does not give lather with hard water easily because it reacts with the calcium and magnesium ions present in hard water to form insoluble calcium and magnesium salts.

    Hard water contains calcium ions and magnesium ions. Soap does not give lather with hard water easily because it reacts with the calcium and magnesium ions present in hard water to form insoluble calcium and magnesium salts.

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  6. Asked: In:

    How do we examine the cleaning capacity of soap?

    Ikshita Bhatti

    Cleaning capacity of soap is examined through its foaming capacity.

    Cleaning capacity of soap is examined through its foaming capacity.

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