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30% solution of hydrogen peroxide is wel...

30% solution of hydrogen peroxide is well known as

A

Perhydrol

B

10 volume peroxide

C

70% w/w `H_(2)O_(2)`

D

All of these

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The correct Answer is:
A
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Hydrogen peroxide (H_2 O_2) was first prepared by Thenard by acidifying barium peroxide and removal of excess water by evaporation under reduced pressure. Its strength can be expressed as weigth percentage or as volume percentage . 25% solution by weight means 25 g of hydrogen peroxide are present in 100 g of solution and 25 volume of hydrogen peroxide means that 1 litre of this solution will give 25 L of oxygen at NTP. Why can dilute solution of hydrogen peroxide not be concentrated by heating ?

Why can dilute solutions of hydrogen peroxide not be concentrated by heating. How can be concentrated solutions of hydrogen peroxide be obtained ?

Knowledge Check

  • Aqueous solution of hydrogen peroxide .

    A
    Turns blue litmus pink
    B
    Gives bright blue colour in ether with acidified `K_2Cr_2O_7` solution
    C
    Gives yellow or orange coloured solution with an acidified solution of titanium salt
    D
    Bleaches blue litmus

  • The strength of 15 volume solution of hydrogen peroxide is

    A
    15.2g/L
    B
    45.53g/L
    C
    34 g/L
    D
    4.533g/L

  • 30- volume hydrogen peroxide means

    A
    `30 %` of `H_(2)O_(2)` by volume
    B
    `30 g` of `H_(2)O_(2)` solution contains `1g` of `H_(2)O`
    C
    ` 1 cm^(3)` of solution liberates `30 cm^(3)` of dioxygen gas at STP
    D
    `1 cm^(3)` of solution liberate `30 cm^(3)` of dioxygen gas at `STP`

    • Similar Questions

    Explore conceptually related problems

    Why can dilute solutions of hydrogen peroxide not be concentrated by heating? How can a conentrated solution of hydrogen peroxide be obtanied ?

    Calculate the strength of 30 volume solution of hydrogen peroxide.

    The aqeous solution of hydrogen peroxide:

    30 volume hydrogen peroxide means

    Calculater the strength of 20V solution of hydrogen peroxide.

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