Is CaS ionic or covalent?
Is CaS ionic or covalent?
1 Answer. Calcium sulfide, CaS , exhibits an ionic bond.
How do you write the formula for calcium sulfide?
CaS
Is calcium sulfide soluble in water?
The sulfides of all metals except barium, calcium, magnesium, sodium, potassium, and ammonium are insoluble in water. BaS, CaS, and MgS are sparingly soluble.
How do you know which salt is more soluble?
If there two rules appear to contradict each other, the preceding rule takes precedence.
- Salts containing Group I elements (Li+, Na+, K+, Cs+, Rb+) are soluble .
- Salts containing nitrate ion (NO3-) are generally soluble.
- Salts containing Cl -, Br -, or I – are generally soluble.
- Most silver salts are insoluble.
Which salt has the highest solubility at 293 K?
ammonium chloride
Which salt has the highest solubility at 333 K?
Ammonium chloride has the highest solubility at 293K.
What is the solubility of potassium nitrate in 50 C water?
(d) Initially there is 100 g of potassium nitrate in solution, at 50 °C the solubility is 84 g/100g (original data or graph), so 16 g will have crystallised out.
How do you find the solubility of a gram?
Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g .
How do you find the amount of solute in a solution?
One method is using molarity (most often method used in chemistry). The equation for molarity is: Molarity = moles of solute/liters of solution. If you know the molarity (concentration) of a solution and the total volume of the solution (make sure it is in liters), you can determine the number of moles of solute.
How do you calculate grams per 100ml concentration?
We want Concentration=Mass of solute100 mL volume of solvent . We make the reasonable assumption that the volume of solution is equal to 40⋅mL . 25⋅g(40100)⋅mL=62.5⋅g⋅(100⋅mL)−1 ……….
What does G 100ml mean?
Therefore, 100 g of water will have a volume of 100 × 1 mL = 100 mL at 25°C. So at 25°C and 101.3 kPa, the solubility of a solute in water given as mass in grams per 100 g water is the same as the solubility of the solute given as mass in grams per 100 mL of water.
Is water and salt miscible?
Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions. The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance.
Is g ml a concentration?
1% m/v solutions are sometimes thought of as being gram/100 mL but this detracts from the fact that % m/v is g/mL; 1 g of water has a volume of approximately 1 mL (at standard temperature and pressure) and the mass concentration is said to be 100%. The result is given as “mass/volume percentage”.