Thermodynamics of aqueous carbonate solutions including mixtures of sodium carbonate, bicarbonate, and chloride

Thermodynamic and Transport Properties of Glycine in Aqueous Solutions of Sodium Carbonate at Different Temperatures

A sodium carbonate-bicarbonate buffer for alkaline phosphatases.

For the study of alkaline phosphatase systems a non-phosphate-containing buffer is required. The buffers in common use for the alkaline pH range are ammonia, borate, glytine and veronal. Ammonia and borate have a retarding effect on the rate of ,enzymic hydrolysis of phosphoric esters. Glycine activates phosphatase when present in very low concentrations (0 1-1 mm), but in the concentrations us...

Stability of hydrogen peroxide in sodium carbonate solutions

The rate of decomposition of hydrogen peroxide has been measured in aqueous, concentrated (0.1–1M) reagent-grade sodium carbonate liquors and compared with that in sodium hydroxide liquors at the same pH, temperature, and ionic strength. Over the ranges of temperature (303–323 K), pH (10.0–10.6), and ionic strength (1.5–3.0M), and without peroxide-stabilizing additives, hydrogen peroxide decomp...

Sodium carbonate revisited.

We present the structure of anhydrous sodium carbonate at room temperature (phase gamma) and 110 K (phase delta) based on single-crystal X-ray diffraction data. The incommensurate phase gamma was determined almost 30 years ago in the harmonic approximation using one modulation wave and first-order satellites. In our work we use satellites up to fifth order and additional harmonic waves to model...

Nanometer-scale ion aggregates in aqueous electrolyte solutions: guanidinium carbonate.

Neutron diffraction with isotopic substitution (NDIS) experiments and molecular dynamics (MD) simulations have been used to characterize the structure of aqueous guanidinium carbonate (Gdm2CO3) solutions. The MD simulations found very strong hetero-ion pairing in Gdm2CO3 solution and were used to determine the best structural experiment to demonstrate this ion pairing. The NDIS experiments conf...