Fresh milk (PH = 6) is turned into curd due to the production of lactic acid. Lactic acid reduces the pH of the milk. Milk will sour due to the formation of lactic acid.
Acetic acid (CH3COOH) is weaker than HCl, HCl is a stronger acid. The production of hydrogen gas as a byproduct of the acid’s reaction with the magnesium ribbon causes fizzing. Since HCl is such a powerful acid, test tube A releases a lot of hydrogen gas. As a result, test tube A experiences increased fizzing.
In increasing order of hydrogen ion concentration, pH 11(C) < pH 9(E) < pH 7 (D) < pH 4 (A) < pH 1 (B) PH = 11 – Strongly alkaline pH = 9 – Weakly alkaline PH = 7 – Neutral pH = 4 – Weakly acidic pH = 1 – Strongly acidic
Acids do not produce H+ ions in absence of water , thats why acids not show acidic behaviour in the absence of water. Acids behave as acids , because hydrogen (H+) ions are present. Water is definitely required for acids to show their acidic behaviour because hydrogen ions (H+)can only be formed there.
There are no ionic compounds in distilled water.In comparison, rainwater contains a lot more chemicals.Carbon dioxide from the air is one of the acidic gases that rainwater has dissolved and turned into carbonic acid. This indicates that it contains carbonate and hydrogen ions. Therefore, rainwater can conduct electricity when there are acids present.
As shown in the figure, put two nails into the wooden or rubber cork and set it on a beaker. Connect the iron nail to a wire that is connected to the switch, a bulb, and a 6-volt battery. Pour some alcohol or glucose on to plate, then dip your nails in it to soak …
(a) Dilute sulphuric acid reacts with zinc granules to give zinc sulphate and hydrogen gas Dilute sulphuric acid + zinc → Zinc Sulphate + Hydrogen Gas H2SO4(aq) + Zn → ZnSO4(aq) + H2(g) (b) Dilute hydrochloric acid reacts with magnesium ribbon to give magnesium oxide and hydrogen gas. Dilute Hydrochloric + Magnesium → Magnesium Chloride …
The correct answer is (c) Antacid Indigestion is due to the excess production of acid (HCl) in the stomach. Medicines used to treat indigestion is called Antacid.
The answer is option (d) 16ml. 10 ml of NaOH requires 8 ml of HCl, and 20 ml of NaOH requires 8 x 2 = 16 ml of HCl.
The answer is (b) HCl. Eggshells are made by calcium carbonate (CaCO3), which in reaction with HCl, liberates CO2 gas, which turns lime water[Ca(OH)2] into milky due to formation of milky colour of calcium carbonate(CaCO3). CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) Ca(OH)2(aq) + CO2(aq) → CaCO3(s) + H2O(l)
