Stoichiometry
In a neutral solution

Both H⁺ and OH⁻ ions are present in very small but equal concentration
H⁺ ions are absent
None of these
OH⁻ ions are absent

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Stoichiometry
The heat capacity of a substance is

Higher for solid state than for liquid state
Greater for liquid state than for solid state
Lower for liquid state than for gaseous state
Equal for solid and liquid states below melting point

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