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In photography , Na(2)S(2)O(3).5H(2)O is...

In photography , `Na_(2)S_(2)O_(3).5H_(2)O` is used

A

in reduction of Ag metal from AgBr

B

for the conversion of AgBr into silver thiosulphate

C

for the conversion of AgBr into silver sulphate

D

for the conversion of AgBr into soluble thiosulphate complex.

Text Solution

Verified by Experts

`AgBr+2Na_(2)S_(2)O_(3)rarrNa_(3)[Ag(S_(2)O_(3))_(2)]+NaBr`
soluble complex
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What mass of Na_(2)S_(2)O_(3).5H_(2)O is needed to make 500 cm^(3) of 0.200N solution for the reaction? 2S_(2)O_(3)^(2-)+I_(2)rarrS_(4)O_(6)^(2-)+2I^(-)

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Knowledge Check

  • Sodium thiosulphate, Na_(2)S_(2)O_(3).5H_(2)O is used in photography to

    A
    Reduce the AgBr grains to metallic Ag
    B
    Convert metallic Ag to Ag salt
    C
    Remove undecomposed AgBr as soluble silver thisolphate complex
    D
    Remove reduced silver

  • Sodium thiosulphate, Na_(2)S_(2)O_(3)*5H_(2)O is used in photography to:

    A
    Reduce the silver bromide to metallic silver
    B
    Convert the metallic silver to silver salt
    C
    Reduce undecomposed AgBr as soluble silver thiosulphate complex
    D
    Remove reduced silver

  • Sodium thiosulphate (Na_(2)S_(2)O_(3).5H_(2)O) is used in photography to

    A
    Reduces silver bromide to metallic silver
    B
    Convert metallic silver to silver salt
    C
    Remove undecomposed `AgBr` as a soluble silver thiosulphate complex
    D
    Remove unreduced silver

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    Hypo is the common name of sodium thiosulphate, with molecular formula Na_(2)S_(2)O_(3) . It is used as intermediate in iodometric as well as in iodimetric titrations. Iodine and chlorine react with hypo in different ways as follows : 2na_(2)S_(2)O_(3)+I_(2) to 2NaI+Na_(2)S_(4)O_(6) Cl_(2)(g)+S_(2)O_(3)^(2-) to SO_(4)^(2-) + Cl^(-) +S Suppose, 50 mL of 0.01 M Na_(2)S_(2)O_(3) solution and 5xx10^(-4) mol of Cl_(2) are allowed to react according to the above equation. Hypo is also used in photography to dissolve AgBr, forming a complex compound. 2Na_(2)S_(2)O_(3) +AgBr to Na_(3)[Ag(S_(2)O_(3))_(2)]+NaBr The process of photography, in which Na_(2)S_(2)O_(3) is used, is called

    The equivalent mass of sodium thiosulphate (Na_(2)S_(2)O_(3). 5H_(2)O) in the reaction, 2Na_(2)S_(2)O_(3)+I_(2) to 2NaI+Na_(2)S_(4)O_(6) is :

    Na_(2)S_(2)O_(3) is prepared by :

    A pale yellow precipitate is insoluble in water, con. Acids and ammonia. However it is soluble in hyop (Na_(2) S_(2)O_(3). 5H_(2)O) solution. The molecular formula of the compound is

    Na_2S_2O_3. 5H_2O is used in photography to

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