answer 1st and 2nd question
Answers
Answer:
Explanation:
1. A.PRECIPITATION REACTION ARE THOSE REACTIONS WHERE PRECIPITATES FORM WHICH ARE INSOLUBLE IN WATER.
EXAMPLE. Na2SO4+ BaCl2 → BaSO4+ 2NaCl. here BaSO4 IS PRECIPITATE.
B. WHEN AN ACID AND A BASE REACT THEY FORM SALT AND WATER WHICH IS CALLED NEUTRALIZATION REACTION.
EG. HCl+ NaOH→ NaCl+ H2O.
C. CATALYSTS ARE COMPLEX CHEMICAL COMPOUNDS WHICH EITHER MAKE A REACTION FAST OR SLOW WITHOUT GETTING ITSELF REACTED IN THE REACTION. EG. ZEOLITE.
2. REACTIVITY SERIES IS THE SERIES THAT SHOWS THE ELEMENTS WHICH ARE THE MOST REACTIVE TO THOSE WHICH ARE THE LEAST REACTIVE IN NATURE. REACTIVITY MEANS HOW FAST AN ELEMENT CAN LOSE ELECTRONS.
MOST REACTIVE ELEMENT IS POTASSIUM AND LESS REACTIVE ELEMENT IS PLATINUM.
FACT: KEDAR NATH KA(Ca) MALI ALU ZARA FEEKA PAKATA HAI CUOI HAI AAGE AYE AUR PITEIN
IS THE SENTENCE TO REMEMBER THE WHOLE REACTIVITY SERIES.
THIS IS= K, Na, Ca, Mg, Al, Zn, Fe, Pb, H, Cu, Hg, Ag, Au, Pt.
DO NOT ADD AUR. I HOPE YOU KNOW THE ELEMENTS BY THEIR SYMBOLS.