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Oil-Water

SWL = 0.2 SWCR = 0.22 SOWCR = 0.2 KRO = 0.9 KRW = 1 SORW = 0.2 KRORW = 0.8

Saturation table end-point scaling (SWCR, SGCR, SOWCR, SOGCR, SWL)

SWCR - critical water saturation (that is the largest water saturation for which the water relative permeability is zero)

SOWCR - critical oil-in-water saturation (that is the largest oil saturation for which the oil relative permeability is zero in an oil-water system)

SWL - connate water saturation (that is the smallest water saturation in a water saturation function table)

Relative permeability end-point scaling (KRW, KRG, KRO, KRWR, KRGR, KRORG, KRORW)

KRW - relative permeability of water at maximum water saturation parameter

KRO - relative permeability of oil at maximum oil saturation parameter

KRWR - relative permeability of water at residual oil saturation (or residual gas saturation in a gas-water run) parameter

KRORW - relative permeability of oil at critical water saturation parameter

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In an acid-base titration equivalent quantities of hydronium ions and hydroxide ions are present a. at the beginning point. c. at the endpoint. b. at the midpoint. d. throughout the titration.?

At the endpoint.


What is endpoint in titration?

The endpoint of a titration is when the indicator first changes in appearance, or when an instrument first gives a reading which indicates that the titration is finished. The endpoint is always slightly after the equivalence point.


What changes color at the endpoint of titration?

The color change at the endpoint of titration is usually due to an indicator that has been added to the solution being titrated. The change in color indicates that the reaction is complete and can help determine the endpoint of the titration.


Changes color at the endpoint of a titration?

yes,its true that colour changes at the endpoint of titration but in some cases coloured solution become colourless.it indicate end of a reaction in which one substance has been fully used up.indicators are used to locate the endpoint but in certain cases reactant or product itself is coloured which at endpoint become colourless or coloured.


How is the endpoint of a titration between H3PO4 and NaOH determined?

The endpoint of a titration between H3PO4 (phosphoric acid) and NaOH (sodium hydroxide) is determined by using an indicator that changes color when the reaction is complete. This indicator helps to visually identify when the acid and base have reacted in the correct proportions, indicating the endpoint of the titration.