Class 10 Class Acids, Bases and Salts. Does acid solution conduct electricity? Coductivity of electricity in the solution is due to ion present in it. Therefore all acid solutions, whether mineral acids or organic acids, conduct electricity. They allow the passage of electric current through them.
Switch Flag Bookmark. Why should curd and sour substances not be kept in brass and copper vessels? Curd and other sour substances contain acids. The ability of a substance to eat through other materials or damage skin is more of a function of the properties of that acid, as well as its concentration. Although, strong acids are more directly dangerous at lower concentrations a strong acid is not necessarily more dangerous than a weak one. For example, hydrofluoric acid is a weak acid 1 , but it is extremely dangerous and should be handled with great care.
Hydrofluoric acid is particularly dangerous because it is capable of eating through glass, as seen in the video in the links section V1. The percent dissociation of an acid or base is mathematically indicated by the acid ionization constant K a or the base ionization constant K b 1. These terms refer to the ratio of reactants to products in equilibrium when the acid or base reacts with water. For acids the expression will be. The stronger an acid is, the lower the pH it will produce in solution.
For strong acids, you can calculate the pH by simply taking the negative logarithm of its molarity as it completely dissociates into its conjugate base and hydronium. The same goes for strong bases, except the negative logarithm gives you the pOH as opposed to the pH. For weak acids and bases, the higher the K a or K b , the more acidic or basic the solution. All acids have a conjugate base that forms when they react with water, and similarly, all bases have a conjugate acid that reacts when they form with water.
The higher the Ka, the stronger the acid is, and the weaker its conjugate base is. Similarly, the higher the K b , the stronger the substance is as a base, and the more weakly acidic its conjugate acid is. HCl is a strong acid and completely dissociates in water, therefore the pH will be equal to the negative logarithm of the concentration of HCl. The K a value for acetic acid is 1. The K a value is a measure of the ratio between reactants and products at equilibrium.
A higher K a value means a higher ratio of reactants to products, and so the acid with the higher K a value will be producing more hydronium, and therefore have a lower pH.
Therefore the solution of benzoic acid will have a lower pH. Cool Dude Grade Similar Questions 10a Solid NaCl does not conduct electricity but when dissolved in water, it conducts electricity. Tap water conducts electricity because it has dissolved Give reason for the following a Dry HCI does not change the colour of dry litmus paper. Give five examples of non-metals 2 Name a non-metal which conducts electricity c Name a non-metal having lustre shining surface 2 Name a non-metal which is extremely hard.
Choose the most appropriate answer [10x] i Which of the following is a common characteristics of a covalent compound? HCl gas not change the colour of the dry litmus p
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