Acids and base

• Acidic solutions have pH values less than 7.
• base have ph value greater than 7
• A solution with a pH of 6 has ten times the hydrogen ion concentration (acidity) as one with a pH of 7.
• Neutral substances have a pH of 7.
• acids are sour in taste while base are bitter in taster
• synthetic indicators are methyl orange and phenolphthalein
• acid turn blue litmus paper to red
• base turns red litmus paper to blue
• there are some substance whose odour changes in acidic or basic media these are called olfactory indicators
• vanila,clove,onion can be used as olfactory indicators
• ch3cooh is acetic acid
• acid + metal ---> salt + hydrogen gas
• Mg +Hcl ---> Mgcl2+h2
• Fe + HCl --> FeCl2 + H2
• Zn + HCl --> ZnCl2 + H2
• Al + HCL --> AlCl3 + H2
• Cao + h20 ---> Ca(OH)2
• Metal carbonate/metal hydrogen carbonate + acid ---> Salt + Co2 + H20
• Na2co3 + Hcl ---> NaCl + CO2 + H20
• Sodium bicarbonate (baking soda) is used as an antacid to neutralize stomach acids.
• base + acid ---> salt + water
• NaOH + HCl ---> Nacl + h2O
• Metal Oxide + Acid ---> acid + water
• Mgo + Hcl ---> Mgcl2 + h2O
• Glucose and alcohol does not conduct electricity
• acid + base ---> salt + water
• The process of dissolving an acid or a base in water is highly exothermic
• The acid must always be added slowly to the water with constant stirring
• Mixing an acid of base with water results in decrease in the concentration of ions. such a process is called dilution and the acid or the base is said to be diluted
• The "p" in Ph stands for potenz in german meaning power
• Ph of mouth is lower than 5.5
• tooth enamel is made up of Hydroxyapatite
• vinegar Acetic acid
• orange citric acid
• Tamarind Tartatic acid
• Tomato Oxalic acid
• Sour milk (curd) latic acid
• lemon citric acid
• Ant sting methanoic acid
• nettle sting methanoic acid