![Reactions with Acids
1. Reaction of Acid with Metal
Acid + Metal → Salt + Hydrogen gas
Mg + H2 SO4 → H2 + Mg SO4
2. Reaction of Acid with Carbonates
Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g)
3. Reaction of Acid with Bicarbonates
NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g)
Strong Bases : NaOH, KOH, Ca(OH) 2
Weak Bases : NH4OH
Alkalis : These are bases which are soluble
in water [NaOH, KOH, Ca(OH) 2].](https://image.slidesharecdn.com/greencactuspptforteaching-wpsoffice-200715125327/85/Acid-base-and-salt-class-10-science-what-are-indicators-10-320.jpg)
Acid base and salt class 10 science|| what are indicators
- 6. Acids Acids is defined as the one which produces hydrogen ions in water. For Example, Sulphuric Acid, Hydrochloric Acid etc. They give sour taste. Acids turn blue litmus to red. This is used as confirmation test for the presence of acid. When acids react with metals, gases are evolved.
- 7. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) Acids These are the substances which have sour taste. • They turn blue litmus solution red. • They give H+ ions in aqueous solution. • The term ‘acid’ has been derived from the Latin word, acidus, which means sour.
- 8. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) Acids
- 9. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) BASES : • These are the substances which are bitter in taste and soapy in touch. • They turn red litmus solution blue. • They give OH− ions in aqueous solution.
- 10. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) Strong Bases : NaOH, KOH, Ca(OH) 2 Weak Bases : NH4OH Alkalis : These are bases which are soluble in water [NaOH, KOH, Ca(OH) 2].
- 11. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) SALTS : These are the compounds formed from reaction of acid and base Example : INDICATORS : NaCl, KCl.
- 12. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) INDICATORS : These are the substances which change their colour/smell in different types of substances. TYPES OF INDICATORS Natural indicators Synthetic indicators Olfactory
- 13. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) Natural indicators — Found in nature in plants. substances. Litmus, red cabbage leaves phenolphthalein extract, flowers of hydrangea plant, turmeric
- 14. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) INDICATORS : These are the substances which change their colour/smell in different types of substances. TYPES OF INDICATORS Natural indicators Synthetic indicators Olfactory
- 15. Reactions with Acids 1. Reaction of Acid with Metal Acid + Metal → Salt + Hydrogen gas Mg + H2 SO4 → H2 + Mg SO4 2. Reaction of Acid with Carbonates Na2 CO3 (s) + 2 HCl (aq) → 2NaCl (aq) + H2O(l) + CO2(g) 3. Reaction of Acid with Bicarbonates NaHCO3 (s) + HCl (aq) → NaCl(aq) + H2O (l) + CO2 (g) INDICATORS : These are the substances which change their colour/smell in different types of substances. TYPES OF INDICATORS Natural indicators Synthetic indicators Olfactory
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- 20. PART 04
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