2025-pangani-g-chemistry-p2-ms
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DATE 07 Dec 2025
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Document Type: This is a Solution Set, designed for Verifying answers and correcting mistakes.
Context: Standard material from the 2025 academic period.
Key Content: Likely covers essential definitions, structured questions to test your proficiency.
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This notes resource titled "2025-pangani-g-chemistry-p2-ms" provides comprehensive exam preparation materials designed to test and enhance your understanding. This resource is structured to facilitate effective learning and retention of important information.
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Detailed Summary
a)( i) Concentrated sulphuric(VI)acid/ H 2 SO4( l ) H 2 SO4( l ) + NaCl( s ) K → NaHSO4( s ) + HCl( g ) Download this and other FREE materials from https://teacher. 05333dm2( ½mk) d) Chlorine reacts with water to form chloric(I)acid ( HOCl ) ( ½mk). The dye in the litmus paper combines with oxygen from HOCl and becomes white ( ½mk) 2. (a) (i) An element is a pure substance which cannot be split into simpler substances (1mk). A molecule is the smallest part of an element that can exist in a free and separate state. (1mk) NB: Both must be mentioned to score. If both not mentioned award zero(0mk) b) (i) J (1mk) - It has the highest number of delocalized electrons//It has 3 delocalized electrons(1mk) (ii) 3Es + G2 → E3G2( s ) 3Mg( s ) + N 2( g ) → Mg3 N 2( s ) (iii) – Ionization energy of C is higher than D. K forms molecular structure( ½mk) consisting of weak Vander Waals force( ½mk) which are easy to break (v) Shown on the grid F C D E J G L H K Download this and other FREE revision materials from https://teacher.
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TERM 2 2025 233/2 CHEMISTRY PAPER 2 1. a)( i) Concentrated sulphuric(VI)acid/ H 2 SO4( l ) H 2 SO4( l ) + NaCl( s ) K → NaHSO4( s ) + HCl( g ) Download this and other FREE materials from https://teacher.co.ke/notes (ii) (iii) Displacement (iv) Fe( s ) + HCl( g ) → FeCl2( s ) + HCl( g ) Potassium hydroxide solution is a strong base with a pH of 13 (1mk) It is neutralized by excess HCl which is acidic and solution becomes acidic hence low pH (1mk) b) Potassium maganate(VII) // KMnO4 (v) Calcium hy...
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