pH concept
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CHXI07:EQUILIBRIUM

315031 \(\mathrm{pH}\) value of which one of the following is not equal to one?

1 \({\text{0}}{\text{.1 M HN}}{{\text{O}}_{\text{3}}}\)
2 \({\text{0}}.{\text{05 M }}{\mkern 1mu} {{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}.{\text{1 M}}{\mkern 1mu} \,\,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 \({\text{50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{4 M}}{\mkern 1mu} \,\,{\text{HCl + 50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{2}}\,{\text{ M}}{\mkern 1mu} \,\,{\text{NaOH}}\)
KCET - 2010
CHXI07:EQUILIBRIUM

315032 What will be the value of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.01\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\)\(\mathrm{CH}_{3} \mathrm{COOH}\left(\mathrm{K}_{a}=1.74 \times 10^{-5}\right)\) ?

1 3.4
2 3.6
3 3.9
4 3.0
NCERT Exemplar
CHXI07:EQUILIBRIUM

315033 Which of the following will have maximum \(\mathrm{pH}\) ?

1 \({\text{0}}{\text{.005 M HCl}}\)
2 \({\text{0}}{\text{.005 N }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}{\text{.005 M}}{\mkern 1mu} \,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 All will have equal \(\mathrm{pH}\)
CHXI07:EQUILIBRIUM

315034 The ionisation constant of an acid, \({{\rm{K}}_{\rm{a}}}\) is the measure of strength of an acid. The \({{\rm{K}}_{\rm{a}}}\) values of acetic acid, hypochlorous acid and formic acid are \(1.74 \times 10^{-5}, 3.0 \times 10^{-8}\) and \(1.8 \times 10^{-4}\) respectively. Which of the following orders of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.1\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\) solutions of these acids is correct?

1 Acetic acid \(>\) hypochlorous acid \(>\) formic acid
2 Hypochlorous acid \(>\) acetic acid \(>\) formic acid
3 Formic acid \(>\) hypochlorous acid \(>\) acetic acid
4 Formic acid \(>\) acetic acid \(>\) hypochlorous acid
NCERT Exemplar
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CHXI07:EQUILIBRIUM

315031 \(\mathrm{pH}\) value of which one of the following is not equal to one?

1 \({\text{0}}{\text{.1 M HN}}{{\text{O}}_{\text{3}}}\)
2 \({\text{0}}.{\text{05 M }}{\mkern 1mu} {{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}.{\text{1 M}}{\mkern 1mu} \,\,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 \({\text{50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{4 M}}{\mkern 1mu} \,\,{\text{HCl + 50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{2}}\,{\text{ M}}{\mkern 1mu} \,\,{\text{NaOH}}\)
KCET - 2010
CHXI07:EQUILIBRIUM

315032 What will be the value of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.01\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\)\(\mathrm{CH}_{3} \mathrm{COOH}\left(\mathrm{K}_{a}=1.74 \times 10^{-5}\right)\) ?

1 3.4
2 3.6
3 3.9
4 3.0
NCERT Exemplar
CHXI07:EQUILIBRIUM

315033 Which of the following will have maximum \(\mathrm{pH}\) ?

1 \({\text{0}}{\text{.005 M HCl}}\)
2 \({\text{0}}{\text{.005 N }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}{\text{.005 M}}{\mkern 1mu} \,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 All will have equal \(\mathrm{pH}\)
CHXI07:EQUILIBRIUM

315034 The ionisation constant of an acid, \({{\rm{K}}_{\rm{a}}}\) is the measure of strength of an acid. The \({{\rm{K}}_{\rm{a}}}\) values of acetic acid, hypochlorous acid and formic acid are \(1.74 \times 10^{-5}, 3.0 \times 10^{-8}\) and \(1.8 \times 10^{-4}\) respectively. Which of the following orders of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.1\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\) solutions of these acids is correct?

1 Acetic acid \(>\) hypochlorous acid \(>\) formic acid
2 Hypochlorous acid \(>\) acetic acid \(>\) formic acid
3 Formic acid \(>\) hypochlorous acid \(>\) acetic acid
4 Formic acid \(>\) acetic acid \(>\) hypochlorous acid
NCERT Exemplar
NEET DIGITAL LIBRARY
CHXI07:EQUILIBRIUM

315031 \(\mathrm{pH}\) value of which one of the following is not equal to one?

1 \({\text{0}}{\text{.1 M HN}}{{\text{O}}_{\text{3}}}\)
2 \({\text{0}}.{\text{05 M }}{\mkern 1mu} {{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}.{\text{1 M}}{\mkern 1mu} \,\,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 \({\text{50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{4 M}}{\mkern 1mu} \,\,{\text{HCl + 50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{2}}\,{\text{ M}}{\mkern 1mu} \,\,{\text{NaOH}}\)
KCET - 2010
CHXI07:EQUILIBRIUM

315032 What will be the value of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.01\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\)\(\mathrm{CH}_{3} \mathrm{COOH}\left(\mathrm{K}_{a}=1.74 \times 10^{-5}\right)\) ?

1 3.4
2 3.6
3 3.9
4 3.0
NCERT Exemplar
CHXI07:EQUILIBRIUM

315033 Which of the following will have maximum \(\mathrm{pH}\) ?

1 \({\text{0}}{\text{.005 M HCl}}\)
2 \({\text{0}}{\text{.005 N }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}{\text{.005 M}}{\mkern 1mu} \,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 All will have equal \(\mathrm{pH}\)
CHXI07:EQUILIBRIUM

315034 The ionisation constant of an acid, \({{\rm{K}}_{\rm{a}}}\) is the measure of strength of an acid. The \({{\rm{K}}_{\rm{a}}}\) values of acetic acid, hypochlorous acid and formic acid are \(1.74 \times 10^{-5}, 3.0 \times 10^{-8}\) and \(1.8 \times 10^{-4}\) respectively. Which of the following orders of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.1\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\) solutions of these acids is correct?

1 Acetic acid \(>\) hypochlorous acid \(>\) formic acid
2 Hypochlorous acid \(>\) acetic acid \(>\) formic acid
3 Formic acid \(>\) hypochlorous acid \(>\) acetic acid
4 Formic acid \(>\) acetic acid \(>\) hypochlorous acid
NCERT Exemplar
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CHXI07:EQUILIBRIUM

315031 \(\mathrm{pH}\) value of which one of the following is not equal to one?

1 \({\text{0}}{\text{.1 M HN}}{{\text{O}}_{\text{3}}}\)
2 \({\text{0}}.{\text{05 M }}{\mkern 1mu} {{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}.{\text{1 M}}{\mkern 1mu} \,\,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 \({\text{50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{4 M}}{\mkern 1mu} \,\,{\text{HCl + 50}}\;{\text{c}}{{\text{m}}^{\text{3}}}{\text{0}}.{\text{2}}\,{\text{ M}}{\mkern 1mu} \,\,{\text{NaOH}}\)
KCET - 2010
CHXI07:EQUILIBRIUM

315032 What will be the value of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.01\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\)\(\mathrm{CH}_{3} \mathrm{COOH}\left(\mathrm{K}_{a}=1.74 \times 10^{-5}\right)\) ?

1 3.4
2 3.6
3 3.9
4 3.0
NCERT Exemplar
CHXI07:EQUILIBRIUM

315033 Which of the following will have maximum \(\mathrm{pH}\) ?

1 \({\text{0}}{\text{.005 M HCl}}\)
2 \({\text{0}}{\text{.005 N }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)
3 \({\text{0}}{\text{.005 M}}{\mkern 1mu} \,{\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}}\)
4 All will have equal \(\mathrm{pH}\)
CHXI07:EQUILIBRIUM

315034 The ionisation constant of an acid, \({{\rm{K}}_{\rm{a}}}\) is the measure of strength of an acid. The \({{\rm{K}}_{\rm{a}}}\) values of acetic acid, hypochlorous acid and formic acid are \(1.74 \times 10^{-5}, 3.0 \times 10^{-8}\) and \(1.8 \times 10^{-4}\) respectively. Which of the following orders of \(\mathrm{pH}\) of \({\rm{0}}{\rm{.1\;mol}}\,\,{\rm{d}}{{\rm{m}}^{{\rm{ - 3}}}}\) solutions of these acids is correct?

1 Acetic acid \(>\) hypochlorous acid \(>\) formic acid
2 Hypochlorous acid \(>\) acetic acid \(>\) formic acid
3 Formic acid \(>\) hypochlorous acid \(>\) acetic acid
4 Formic acid \(>\) acetic acid \(>\) hypochlorous acid
NCERT Exemplar
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