DP Chemistry (first assessment 2025)

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Question SPM.1A.SL.TZ0.19

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.SL.TZ0.19
Level SL Paper 1A Time zone TZ0
Command term Question number 19 Adapted from N/A
19.
[Maximum mark: 1]
SPM.1A.SL.TZ0.19

What is the amount, in mol, of H2O produced for a reaction between 10.0 mol of C2H3Cl and 10.0 mol of O2 if the yield is 90 %?

2C2H3Cl (g) + 5O2 (g) → 4CO2 (g) + 2H2O (g) + 2HCl (g)


A.  3.60

B.  4.00

C.  9.00

D.  10.00

[1]

Markscheme

A