Consider P: 0.01 M HCl; Q: 0.005 M H2SO4; R: 0.01 M NaOH; S: 0.005 M Ba(OH)2 (all strong, fully ionised, 298 K). Select the correct statement(s). (Use log 5=0.699.)

Mixing 1 volume of P with 3 volumes of R gives pH 11.70.

Equal volumes of Q and R give a neutral solution.

P and Q have the same pH, equal to 2.

Mixing 1 volume of P with 3 volumes of R gives pH 11.70.

Equal volumes of Q and R give a neutral solution.

P and Q have the same pH, equal to 2.

JEE Main levelOne or more correct optionsDifficulty 2 of 3ie088

Consider P: $0.01 M$ $HCl$ ; Q: $0.005 M$ $H X_{2} SO X_{4}$ ; R: $0.01 M$ $NaOH$ ; S: $0.005 M$ $Ba (OH) X_{2}$ (all strong, fully ionised, 298 K). Select the correct statement(s). (Use $lo g 5 = 0.699$ .)

[H X^{+}] = 0.01

; Q:

[H X^{+}] = 0.01

, both pH 2. S:

[OH X^{-}] = 0.01

, pH 12 (so 11.70 is wrong). Q + R equal volumes:

H X^{+} = OH X^{-}

, neutral. P:R = 1:3: excess

OH X^{-} = (3 - 1) \times 0.01/4 = 5 \times 1 0^{- 3}

, pOH

2.30

, pH

11.70