Question

The graph below shows how solubility changes with temperature. What is the solubility of Na2HAsO4 at 60°C? 20 g/100 mL of water 46 g/100 mL of water 65 g/100 mL of water 70 g/100 mL of water

Answer 1

Answer is: 65 g/100 mL of water.
Chemical compound Na₂HAsO₄ (disodium hydrogen arsenate or sodium biarsenate) is a salt (inorganic compound). Disodium hydrogen arsenate is a white, water soluble solid and highly toxic. Molar mass of disodium hydrogen arsenate is 185,9 g/mol.

Answer 2

Answer:

65 g/100 mL of water

Explanation:

Solubility of substances changes with the temperature at which they are, for example the coldest the substances more often the case is that they tend to loose solubility, and it is measure in the amount of grams that 100 ml of water can absorbe, Na2HAsO4 at 60ºC has a solubility of 65g/100ml of water, this means that you can dissolve 65 grams of that substance in 100 ml of water when it is at 60ºC.