# At 2°C, the vapor pressure of pure water is 23.76 mmHg and that of a certain seawater sample is 23.11 mmHg. Assuming that seawater contains only NaCl, estimate its molal concentration.

Question

At 2°C, the vapor pressure of pure water is 23.76 mmHg and that of a certain seawater sample is 23.11 mmHg. Assuming that seawater contains only NaCl, estimate its molal concentration.