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Why is calcium bicarbonate soluble in water?
because of hydrogen bonding between bicarbonate and water. its Solubility in water, 16.1 g/100 mL (0 °C) and 16.6 g/100 mL (20°C)........................ by mi mi wing..IIT BOMBAY.INDIA
When the dihydrate of calcium chloride is heated gently it loses one molecule of water of hydration. Write the formulas for the initial and final compounds in this change.?
CaCl2*2H2O ==heat==> CaCl2*H2O
Why calcium ions are used for artificial competence in bacteria?
Calcium chloride treatment in bacterial transformation is necesaary because the bacterial cells are permeable to chloride ions but not the calcium ions. This chloride intake will accompany along with influx of water into the cells which causes the cells to swell. This swelling followed by a mild heat treatment for about 2 minutes will induce the heat shock proteins which allows the uptake of the recombinant DNA!!!! Calcium is a divalent cation. It binds to the hydrophobic membrane and creates channels for uptake of foreign DNA.It can bind to both negatively charged hydrophilic DNA and the cell membrane, which is also has a negative charge. This enhances ability of the competence cell to take up the DNA.
What two substances when mixed together make heat?
Calcium Chloride and water Yeast and Hydrogen Peroxide (Produces alot of gas) Hydrogen Peroxide and Sodium Iodide (Produces alot of gas) Disturbed Sodium Acetate (Shockwave)
If you heat a concentrated solution of a salt and it precipitates is the heat of solution for this salt exothermic or endothermic?
Dissolution of sodium chloride in water is an exothermic process.
Why does calcium chloride heat water?
Calcium chloride heats water because the reaction of Calcium Chloride and water is an exothermic reaction.
Why calcium chloride added in sodium chloride to lower the melting point?
The heat of dissolution for calcium chloride in water is greater compared with the same paremeter for sodium chloride; consequently the process of dissolution need more heat from the environment and the freezing point of the water solution is lower.
What does calcium chloride and water produce?
Heat (but no chemical reaction): this is enthalphy of solution.
Why does phenol red and calcium chloride heat up?
I'm not completely sure, but it does have something to do with the water. When added to water the calcium chloride also heats up, so it's not about the phenol, but about the water and the reaction of the reactant dissolving that causes heat.
What is given off by mixing calcium chloride and water?
heat Please see the link.
What is the heat solution of calcium chloride?
The heat of solution for CaCl2 is -176,2 cal/g.
What energy changer can produce chemical energy-heat energy?
Fire. But there are others. For instance, dissolving a substance such as calcium chloride in water.
What happens when hydrochloric acid and calcium react?
2HCl + Ca give CaCl2 + H2 and lots of heat. It may explode. That is, hydrochloric acid and calcium give Calcium Chloride and hydrogen gas and heat. In practice, it would give Calcium ions and Chloride ions in solution. If you had exactly the right amount of each, you could then evaporate the water and have calcium chloride salt left over. The hydrogen bubbles out and is gone into the air (and eventually into space, lost to earth forever.) You could burn the hydrogen coming off, which would yield more water.
How does ammonia becomes gas?
for preparing ammonia gas (NH3)from ammonium chloride and calcium hydroxide in water.Reactantsammonium chloride (NH4Cl)calcium hydroxide [Ca(OH)2]Gas PreparationGently heat a mixture of ammonium chloride and calcium hydroxide in water. Collect the ammonia from the upward displacement of air in a hood.ReactionCa(OH)2 + 2NH4Cl --> 2NH3 + CaCl2 + 2H2O
What is the molar heat of solution for ammonium nitrate and calcium chloride?
81.1 kj/mol
How do you use calcium chloride around the house?
Calcium chloride is typically used to remove moisture from the air because of its deliquescent properties. It can also be used to melt ice because of its high heat of solution.
Which salt will result in a temperature increase when added to water?
The salt that will result in a temperature increase when added to water is calcium chloride (CaCl2). This is because it is an exothermic salt, meaning it releases heat when dissolved in water.
