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Calculations involving masses

Calculations involving masses

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Question 61

Copper is more reactive than silver.

Copper will displace silver from silver nitrate solution.

Two possible balanced equations for the reaction are:

  • Equation 1: Cu+AgNO3→CuNO3+Ag\text{Cu} + \text{AgNO}_3 \rightarrow \text{CuNO}_3 + \text{Ag}Cu+AgNO3​→CuNO3​+Ag
  • Equation 2: Honor: Cu+2AgNO3→Cu(NO3)2+2Ag\text{Cu} + 2\text{AgNO}_3 \rightarrow \text{Cu}(\text{NO}_3)_2 + 2\text{Ag}Cu+2AgNO3​→Cu(NO3​)2​+2Ag

In an experiment, it was found that 1.27 g of copper reacted completely with excess silver nitrate solution to form 4.32 g of silver.

Carry out a calculation, using the information above, to show which equation represents the reaction taking place.

(Relative atomic masses, ArA_rAr​: Cu=63.5\text{Cu} = 63.5Cu=63.5, Ag=108.0\text{Ag} = 108.0Ag=108.0)

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Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /Calculations involving masses

258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.

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