WebNCEA Level 3 Chemistry (91392) 2024 — page 3 of 6 Q Evidence Achievement Merit Excellence TWO (a)(i) (ii) K (iii) PbBr 2! Pb2+ + 2Br– s= [Pb 2+] [Br–] Let solubility be s: • Correct equilibrium equation and K s expression. • Method correct for determining solubility of PbBr 2.s • Correct solubility of PbBr 2, including unit. (b ... WebNo part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority. Level 3 Chemistry 2024 91392 Demonstrate understanding of equilibrium principles in aqueous systems ... 3 Chemistry 91392, 2024. QUESTION TWO (a) A buffer solution is made by mixing appropriate amounts of ...
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WebNCEA Level 3 Chemistry (91392) 2024 — page 5 of 6 Q Evidence Achievement Merit Excellence THREE (a)(i) 3 (ii) [ions]. NH (iii) CH 3COOH has the smaller pK a / larger K a, so it will be a stronger acid than NH 4 +. This means CH 3COOH will dissociate to a greater extent to produce a higher [HO+] than NH 4 +, so CH 3COOH will have a lower pH. WebChemistry - annotated exemplar Level 3 AS91387 Carry out an investigation in chemistry involving quantitative analysis (3.1) Show: All Chemistry exemplars This annotated exemplar is intended for teacher use only. The student work shown does not always represent a complete sample of what is required. removal of ekos catheter
Level 3 Chemistry (91391) 2024 - NZQA
WebLevel 1: Level 2: Level 3: Request for Clarification of Standard: All levels (DOCX, 78KB) Chemistry Assessor Support Catalogue: All levels : Resources for externally assessed … Demonstrate understanding of the chemistry in a technological application: … Postal address: PO Box 160 Wellington 6140 New Zealand. Street address: … COVID-19 update: Literacy and Numeracy unit standards. In response to the … NZQA New Zealand Qualifications Authority Mana Tohu Matauranga O Aotearoa. … CAS calculators approved for Level 3 Statistics, New Zealand Scholarship … The New Zealand Qualifications Framework (NZQF) is a comprehensive list of all … From late January both digital responses and scanned answer booklets for all … A number of standards are assessed externally, i.e. not by a school's … WebNCEA Level 3 Chemistry (91390) 2024 — page 4 of 5 Q Evidence Achievement Merit Excellence THREE (a) NH 3 Hydrogen bonding, (permanent dipoles), temporary dipoles. C 2H 6 Temporary dipoles / instantaneous dipoles. CH 3NH 2 Hydrogen bonding, permanent dipoles, temporary dipoles. Two rows correct. b(i)(ii) Methanamine and ethane have … WebThe Level 3 achievement standards for Chemistry are registered and have been published on the NZQA website. Exemplars of student work or expected student responses (written … removal of excess skin surgery