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Which of the following is used as food preservative 1 sodium Benzoate 2 sodium Thiosulphate 3 sodium Hydroxide 4 sodium Bicarbonate?
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∙ 15y ago
1.sodium benzoate
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∙ 15y ago
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Which one of the following is considered a weak base sodium hydroxide acetic acid sodium bicarbonate or hydrochloric acid?
Sodium bicarbonate is a weak base.
Which presarvative can be use to preserve food?
Which of the following is used as a food preservative
What happen when Sodium hydroxide reacts with carbon dioxide?
NaOH + CO2--------------- NaHCO3 sodium bicarbonate aka Baking Soda
Equation for the reaction antacid tablet?
I was wondering how to write a word equation of the reactions that occurred between the acid and the respective active ingredients of each of the different antacid powders.i used t he following acntacids;Gastrogel-Magnesium Hydroxide, Aluminium HydroxideSandocal-Calcium Carbonate, Calcium Lactate, GluconateRennie-Calcium Carbonate, Magnesium CarbonateMylanta Double-Magnesium Hydroxide, Aluminium HydroxideMylanta-Magnesium Hydroxide, Aluminium HydroxideDewitt's-Calcium Carbonate, Magnesium Carbonate Sodium Bicarbonate Magnesium Hydroxide
What is the following fastest mechanism of regulation of acid base balance?
bicarbonate buffer system
Why are antacids called antacids?
An antacid is any substance, generally a base or basic salt, which counteracts stomach acidity. In other words, antacids are stomach acid neutralizers. Most all antacids are created with one of the following chemicals:* Aluminium hydroxide (Amphojel, AlternaGEL) * Magnesium hydroxide (Phillips' Milk of Magnesia) * Aluminum hydroxide with magnesium hydroxide (Maalox, Mylanta, Diovol) * Aluminum carbonate gel (Basaljel) * Calcium carbonate (Alcalak, TUMS, Quick-Eze, Rennie, Titralac, Rolaids) * Sodium bicarbonate (Bicarbonate of soda, Alka-Seltzer) * Hydrotalcite (Talcid) * Bismuth subsalicylate (Pepto-Bismol) * Magaldrate with Simethicone (Pepsil) All these chemicals happen to be mostly insoluble in water, making an inherent property of antacids being insoluble.
Equation between potassium iodate and sodium thiosulphate?
This reaction may be misunderstood as a direct reaction between the thiosulphate and iodate ions , however, in practice an iodide and acid mediated production of iodine from the iodate is used to react with the thiosulphate. A standard reaction used to calibrate a solution of sodium thiosulphate is as follows: Acid and potassium iodide are added to a solution of potassium iodate getting the following reaction: KIO3 + 5KI + 3H2SO4 = 3I2 + 3K2SO4 + 3H2O represented by the following ionic equation: IO3- + 5I- + 6H+ = 3I2 + 3H2O Thiosulpathe is titrated against this solution (effectively against iodine): I2 + 2Na2S2O3 = Na2S4O6 + 2NaI represented by the following ionic equation: I2 + 2S2O32- = S4O62- + 2I- where the dark brown coloured solution of iodine turns pale yellow and finally colourless as the reaction proceeds (starch is used as indicator after the pale yellow transition forming a black solution due to an iodine-starch complex which turns colourless upon further addition of thiosulphate).
Which of the following polyatomic ions have the same charge as the hydroxide ion?
Nitrate (NO3^-), because the Hydroxide ion also has a negative one charge (OH^-)
Which one of the following is an example of a strong base?
Apex: Sodium HydroxideConfirmed it thanks to the other guy.
Which of the following is true about bases they tend to decrease PH solution or they release hydroxide ions in solutions?
Technically, neither is entirely true. Bases will not decrease the pH, but neither do they always release hydroxide. For example, ammonia and the amines are basic, but this is because they remove hydronium, not because they add hydroxide. They release hydroxide ions in solution.
Which of the following pH range is a strong base?
pH 14 is the strongest base and it is usually sodium hydroxide
Why does hydroxide act as a base in sodium hydroxide and as an acid in acetic acid?
Hydroxide is a Bronsted-Lowry base, meaning that it accepts protons from other substances. When sodium hydroxide ionizes, it forms the following: NaOH + H2O --> Na+ + OH- In the Arrehnius definiton, it increases the amount of hydroxide. In this case, sodium hydroxide does so. Also, when measuring pH, NaOH gives an alkaline reading, meaning that the pH is above 7. This is due to the decrease of hydronium and the increase of hydroxide. Sodium Hydroxide is not in Acetic Acid. Acetic Acid is CH3COOH (also known as HC2H3O2).
