MHT CET202122 Sep 2021Morning ShiftChemistrySome Basic Concepts of ChemistryActual

What is the mass of potassium chloride produced when 12.25 ~g potassium chlorate undergo decomposition? (At mass: K =39 , Cl =35.5, O =16)

Options

A16.0 ~g
B14.9 ~g
C7.45 ~g
D4.25 ~g

Correct answer

C. 7.45 ~g

Step-by-step solution

aligned & KClO ₃ KCl + 3 2 O ₂ & Mole of KClO ₃= moles of KCl & reacted produced & 12.25 122.5 = W 74.5 & ~W =7.45 ~g ( array l M . M of KCl =74.5 M.M.of KClO ₃=122.5 array ) aligned

Practice Some Basic Concepts of Chemistry on Quantrex Academy →

More from Some Basic Concepts of Chemistry

How many molecules of C O₂ (g) are obtained on reaction of 24 grams of methane with 4moles of oxygen? 2026 500 mL of an aqueous solution of glucose C₆ H₁₂ O₆ (Molar mass 180 gmol ⁻¹ ) contains 6.02 10²² molecules. The concentration of the solution will be: 2026 The mass of precipitate formed when 50 mL of 16.9% aqueous solution of AgNO ₃ is mixed with 50 mL of 5.8% NaCl solution is------------g [Ag = 107.8, N = 14, O = 16, Na = 23, Cl = 3 2026 100 mL of 1.0 M aqueous NaOH solution was diluted to 1.0 L by adding water. Half of this solution was discarded. A new 100 mL of 0.5 M aqueous NaOH solution was added to the remain 2026 From the given information, select the suitable law of chemical combination: Cupric Carbonate % of Cu % of C % of O Natural Sample 51.35 9.74 38.91 Synthetic Sample 51.35 9.74 38.9 2026 Match List-I with List-II and select the correct option (Based on mole concept): List-I List-II (a) 2 moles of ethene (i) 11.2 L volume at STP (b) Mass is equal to 66 g (ii) 56 g ( 2026 The mass of a mixture containing NaCl and NaBr is 4.0 g. If Na is 30 % of the total mixture, the composition of NaCl in the mixture is 2025 Two acids A and B are titrated separately. 25 mL of 0.5 M Na ₂ CO ₃ solution requires 10 mL of A and 40 mL of B for complete neutralisation. The volume (in L) of A and B required t 2025 Full Some Basic Concepts of Chemistry list All MHT CET PYQs