Which has the highest pH? from Chemistry Equilibrium

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement

581.

Which has the highest pH?

  • CH3COOK

  • Na2CO3

  • NH4Cl

  • NaNO3


B.

Na2CO3

NH4Cl solution is acidic, its pH < 7. NaNO3 solution is neutral, its pH = 7. CH3COOK and Na2CO4solutions are basic their pH > 7. But Na2CO3 solution is more basic, its pH > pH of CH3COOK solution.


Advertisement
582.

pH of a solution can be expressed as :

  • -loge [H+]

  • -log10 [H+]

  • loge [H+]

  • log10[H+]


583.

K2Cr2O7 in acidic medium converts into

  • Cr2+

  • Cr3+

  • Cr4+

  • Cr5+


584.

KpKc for following reaction will be CO(g)+12 O2(g)CO2(g).

  • RT

  • 1RT

  • 1RT

  • RT2


Advertisement
585.

At 60° and 1 atm, N2O4 is 50% dissociated into NO2 then KP is

  • 1.33 atm

  • 2 atm

  • 2.67 atm

  • 3 atm


586.

pKa increases in benzoic acid when substituent "x" is bonded at para-position, then "x" is

  • -COOH

  • -NO2

  • -CN

  • -OCH3


587.

What will be the solubility product of AX3?

  • 27S4

  • 4S3

  • 36S4

  • 9S3


588.

Assertion : Aqueous solution of CoCl2 is pink in colour. It turns blue in presence of conc. HCl.

Reason : It is due to the formation of [CoCl4]2-.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Advertisement
589.

The concentration of Ag+ ion in a given saturated solution of AgCl at 25°C is 1.06 x 10-5 g ion L-1 .Thus , the solubility product of AgCl is :

  • 0.453 x 10-10

  • 0.530 x 10-10

  • 1.12 x 10-10

  • 2.12 x 10-10


590.

Solution of 0.l N NH4OH and 0.1 N NH4Cl has pH 9.25. Then , pKb of NH4OH is :

  • 9.75

  • 4.75

  • 3.75

  • 8.25


Advertisement