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H(2)CO(3)+NaHCO(3) found in blood helps ...

`H_(2)CO_(3)+NaHCO_(3)` found in blood helps in maintaining pH of the blood close to 7.4. An excess of acid entering the blood stream is removed by:

A

`HCO_(3)^(-)`

B

`H_(2)CO_(3)`

C

`H^(+)"ion"`

D

`CO_(3)^(2-)"ion"`

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The correct Answer is:
A
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Which of the following systems helps to maintain the pH of blood?

The buffer system which helps to maintain the pH of blood between 7.26 to 7.42 is

Human blood has a narrow Ph range of 7.3-7.4 , which must be maintained for methabolic processes to function properly. To keep the Ph in this range requires a delicate balance between the concentration of the conjugate acid-base pairs making upto the buffer system. The main buffer is a carbonic acid/ hydrogencarbonate system, which involves the following three equilibria. CO_(2)(g)hArrCO_(2)(aq) CO_(2)(aq)+H_(2)O(l)hArrH_(2)CO_(3)(aq) H_(2)CO(aq)+H_(2)O(l)hArrHCO_(3)^(-)(aq)+H_(3)O^(+)(aq) Carbonic acid (H_(2)CO_(3)) is a weak acid and HCO_(3)^(-) (aq) is its conjugate base. At the temperature of the human body, the pK_(a) for carbonic acid is 6.4 However, the normal concentration of CO_(2)(g) in the lungs maintanis a ratio of HCO_(3)^(-)(aq)//H_(2)CO_(3)(aq) in blood plasma of about 8:1 . The carbonic acid concentration in the bloos is largely controlled by breathing and respiration. Hydrogencarbonate ion concentration is largely controlled by excreation in urine. If blood pH rises above 7.4 , a potentially life-threatening conditon called alkalosis can result. This can happen in patients who are hyperventilating from severse anxiety, or in climbers suffereing from oxygen deficency at high altitude. (Given: log 2=0.3) Calculate the maximum permissible value of ([H_(2)CO_(3)])/([HCO_(3)^(-)]) in the human blood to just prevent alkalosis.

Human blood has a narrow Ph range of 7.3-7.4 , which must be maintained for methabolic processes to function properly. To keep the Ph in this range requires a delicate balance between the concentration of the conjugate acid-base pairs making upto the buffer system. The main buffer is a carbonic acid/ hydrogencarbonate system, which involves the following three equilibria. CO_(2)(g)hArrCO_(2)(aq) CO_(2)(aq)+H_(2)O(l)hArrH_(2)CO_(3)(aq) H_(2)CO(aq)+H_(2)O(l)hArrHCO_(3)^(-)(aq)+H_(3)O^(+)(aq) Carbonic acid (H_(2)CO_(3)) is a weak acid and HCO_(3)^(-) (aq) is its conjugate base. At the temperature of the human body, the pK_(a) for carbonic acid is 6.4 However, the normal concentration of CO_(2)(g) in the lungs maintanis a ratio of HCO_(3)^(-)(aq)//H_(2)CO_(3)(aq) in blood plasma of about 8:1 . The carbonic acid concentration in the bloos is largely controlled by breathing and respiration. Hydrogencarbonate ion concentration is largely controlled by excreation in urine. If blood pH rises above 7.4 , a potentially life-threatening conditon called alkalosis can result. This can happen in patients who are hyperventilating from severse anxiety, or in climbers suffereing from oxygen deficency at high altitude. (Given: log 2=0.3) Calculate pH of blood at the temperature of the human body.

Human blood has a narrow Ph range of 7.3-7.4 , which must be maintained for methabolic processes to function properly. To keep the Ph in this range requires a delicate balance between the concentration of the conjugate acid-base pairs making upto the buffer system. The main buffer is a carbonic acid/ hydrogencarbonate system, which involves the following three equilibria. CO_(2)(g)hArrCO_(2)(aq) CO_(2)(aq)+H_(2)O(l)hArrH_(2)CO_(3)(aq) H_(2)CO(aq)+H_(2)O(l)hArrHCO_(3)^(-)(aq)+H_(3)O^(+)(aq) Carbonic acid (H_(2)CO_(3)) is a weak acid and HCO_(3)^(-) (aq) is its conjugate base. At the temperature of the human body, the pK_(a) for carbonic acid is 6.4 However, the normal concentration of CO_(2)(g) in the lungs maintanis a ratio of HCO_(3)^(-)(aq)//H_(2)CO_(3)(aq) in blood plasma of about 8:1 . The carbonic acid concentration in the bloos is largely controlled by breathing and respiration. Hydrogencarbonate ion concentration is largely controlled by excreation in urine. If blood pH rises above 7.4 , a potentially life-threatening conditon called alkalosis can result. This can happen in patients who are hyperventilating from severse anxiety, or in climbers suffereing from oxygen deficency at high altitude. (Given: log 2=0.3) Select the correct option.

Blood has pH 7.4. what is the nature of blood ?

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MOTION-IONIC EQUILIBRUIM-Exercise -1
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  2. The pH of buffer of NH4OH + NH4Cl - type is given by -

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  3. A buffer solution can be prepared by mixing solution of:

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  4. Which one of the following mixture does not act as a buffer solution?

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  5. In the neutralization process of H3PO4 and NaOH, the number of buffers...

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  6. H(2)CO(3)+NaHCO(3) found in blood helps in maintaining pH of the blood...

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  7. pH range of colour change for methyl orange indicator is-

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  8. The colour of phenolphthalein in acid is-

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  9. Methyl orange is an example of :

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  10. Phenolphthalein is-

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  11. According to Modern quinoid theory the indicator used in acid-alkali t...

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  12. Phenolphthalein shows colour change in a definite pH range, which is-

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  13. If s is the molar solubility of Ag2SO4, then

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  14. Which of the following would increase the solubility of Pb(OH)(2)?

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  15. The aqueous solution of which of the following sulphides would contain...

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  16. Which of the following has the maximum solubility in water?

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  17. The necessary condition for saturated solution is –

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  18. At 30^(@) C the solubility of Ag(2)CO(3) (K(SP)=8xx10^(-12)) would be ...

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  19. Which of the following expressions shows the saturated solution of PbS...

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  20. The correct relation between Ksp and solubility for the salt KAI(SO(4)...

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