### Abstract

The apparent molal volumes of dilute (0.002 to 1.0 m) aqueous HCl and NaOH solutions have been determined at 0, 25, and 50°C and NaCl solutions at 50°C. The partial molal volumes ( {Mathematical expression}) of HCl, NaOH, and NaCl solutions have been determined from these apparent molal volumes and other reliable data from the literature. The partial-molal-volume changes ( {Mathematical expression}) for the ionization of water, H_{2}O→H^{+}+OH^{-}, have been determined from 0 to 50°C and 0 to 1 m ionic strength from the partial molal volumes of HCl, NaOH, NaCl, and H_{2}O. The partial molal compressibilities ( {Mathematical expression} for HCl, NaOH, NaCl, and H_{2}O have been estimated from data in the literature and used to determine the partial molal compressibility changes ( {Mathematical expression}) for the ionization of water from 0 to 50°C and 0 to 1 m ionic strength. The effect of pressure on the ionization constant of water has been estimated from partial-molal-volume and compressibility changes using the relation {Mathematical expression} from 0 to 50°C and 0 to 2000 bars. The results agree very well with the directly measured values.

Original language | English (US) |
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Pages (from-to) | 309-327 |

Number of pages | 19 |

Journal | Journal of Solution Chemistry |

Volume | 1 |

Issue number | 4 |

DOIs | |

State | Published - Oct 1972 |

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### Keywords

- Effect of pressure
- ionization of water
- molal volume

### ASJC Scopus subject areas

- Physical and Theoretical Chemistry

### Cite this

*Journal of Solution Chemistry*,

*1*(4), 309-327. https://doi.org/10.1007/BF00715990