Home › CBSE Class 9 › chemistry › c9chemicallaws › Per NCERT Example 9.1, 4.0 g calcium carbonate r…
Per NCERT Example 9.1, 4.0 g calcium carbonate reacts with 2.92 g HCl to give CO₂, water, and calcium chloride. What is the TOTAL mass of products by conservation?
ACannot be determined
B6.92 kg
C6.92 g (= 4.0 + 2.92, equal to total mass of reactants)
D12 g
Answer & Solution
Correct answer: C. 6.92 g (= 4.0 + 2.92, equal to total mass of reactants)
Per NCERT Example 9.1, conservation gives mass of products = mass of reactants = 4.0 + 2.92 = 6.92 g (verified: 1.76 + 0.72 + 4.44 = 6.92 g).
Related questions
Per NCERT, when zinc reacts with dilute HCl to form zinc chloride + hydrogen gas, would coPer NCERT, in the Activity 9.3 reaction between sodium sulfate and barium chloride, does tPer NCERT, in Activity 9.3 mixing sodium sulfate solution with barium chloride solution inPer NCERT, what is the difference between a PHYSICAL and a CHEMICAL change?Per NCERT, what does the law of constant proportions imply about WATER (H₂O) from differenPer NCERT Example 9.2, 12 g of carbon combines with 32 g of oxygen to form 44 g of CO₂. HoPer NCERT, who is credited with the LAW OF CONSTANT PROPORTIONS (or Definite Proportions)?Per NCERT, the LAW OF CONSTANT PROPORTIONS states which of the following?